i got an unknown crash of zabbix server, it doesn´t crash absolutly but after this happens the timer process went busy to 100%

attached is the graph from the "timer process busy"

following are the loglines:
28561:20111108:200830.999 Got signal [signal:11(SIGSEGV),reason:1,refaddr:0x2dc73d10]. Crashing ...
28561:20111108:200830.999 ====== Fatal information: ======
28561:20111108:200830.999 Program counter: 0x315c472e18
28561:20111108:200830.999 === Registers: ===
28561:20111108:200830.999 r8 = 0 = 0 = 0
28561:20111108:200830.999 r9 = 0 = 0 = 0
28561:20111108:200830.999 r10 = 0 = 0 = 0
28561:20111108:200830.999 r11 = 3c62ea6cfb = 259357568251 = 259357568251
28561:20111108:200830.999 r12 = 315c753a38 = 212004583992 = 212004583992
28561:20111108:200830.999 r13 = 315c7539e0 = 212004583904 = 212004583904
28561:20111108:200830.999 r14 = 16e332f0 = 383988464 = 383988464
28561:20111108:200830.999 r15 = 20 = 32 = 32
28561:20111108:200830.999 rdi = 315c753b08 = 212004584200 = 212004584200
28561:20111108:200830.999 rsi = 315c7539e0 = 212004583904 = 212004583904
28561:20111108:200830.999 rbp = 17 = 23 = 23
28561:20111108:200830.999 rbx = 16e40a20 = 384043552 = 384043552
28561:20111108:200830.999 rdx = 16e40a40 = 384043584 = 384043584
28561:20111108:200830.999 rax = 0 = 0 = 0
28561:20111108:200830.999 rcx = 16e332d0 = 383988432 = 383988432
28561:20111108:200830.999 rsp = 7fff90ef4140 = 140735624986944 = 140735624986944
28561:20111108:200830.999 rip = 315c472e18 = 212001566232 = 212001566232
28561:20111108:200830.999 efl = 10246 = 66118 = 66118
28561:20111108:200830.999 csgsfs = 33 = 51 = 51
28561:20111108:200830.999 err = 6 = 6 = 6
28561:20111108:200830.999 trapno = e = 14 = 14
28561:20111108:200830.999 oldmask = 0 = 0 = 0
28561:20111108:200830.999 cr2 = 2dc73d10 = 768032016 = 768032016
28561:20111108:200830.999 === Backtrace: ===
28561:20111108:200831.000 13: /opt/baw/sbin/zabbix_server(print_fatal_info+0xcd) [0x44061d]
28561:20111108:200831.000 12: /opt/baw/sbin/zabbix_server [0x43fe88]
28561:20111108:200831.000 11: /lib64/libc.so.6 [0x315c4302d0]
28561:20111108:200831.000 10: /lib64/libc.so.6 [0x315c472e18]
28561:20111108:200831.000 9: /lib64/libc.so.6(__libc_malloc+0x6e) [0x315c474e2e]
28561:20111108:200831.000 8: /opt/baw/sbin/zabbix_server(zbx_malloc2+0x58) [0x4442d8]
28561:20111108:200831.000 7: /opt/baw/sbin/zabbix_server(zbx_db_vselect+0x2ae) [0x46ba9e]
28561:20111108:200831.000 6: /opt/baw/sbin/zabbix_server(__zbx_DBselect+0x90) [0x460c20]
28561:20111108:200831.000 5: /opt/baw/sbin/zabbix_server(evaluate_expressions+0x895) [0x458fb5]
28561:20111108:200831.000 4: /opt/baw/sbin/zabbix_server(main_timer_loop+0x114d) [0x41befd]
28561:20111108:200831.000 3: /opt/baw/sbin/zabbix_server(MAIN_ZABBIX_ENTRY+0x810) [0x4101b0]
28561:20111108:200831.000 2: /opt/baw/sbin/zabbix_server(daemon_start+0x23f) [0x43faef]
28561:20111108:200831.000 1: /lib64/libc.so.6(__libc_start_main+0xf4) [0x315c41d994]
28561:20111108:200831.000 0: /opt/baw/sbin/zabbix_server [0x40c439]
28561:20111108:200831.000 === Memory map: ===
28561:20111108:200831.000 00400000-004e0000 r-xp 00000000 fc:00 1873135 /opt/baw/sbin/za bbix_server
28561:20111108:200831.000 006e0000-006e4000 rw-p 000e0000 fc:00 1873135 /opt/baw/sbin/za bbix_server
28561:20111108:200831.000 006e4000-006ea000 rw-p 006e4000 00:00 0
28561:20111108:200831.000 16d95000-16e7a000 rw-p 16d95000 00:00 0 [heap]
28561:20111108:200831.000 315c000000-315c01c000 r-xp 00000000 fc:00 491571 /lib64/ld-2.5.so
28561:20111108:200831.000 315c21c000-315c21d000 r--p 0001c000 fc:00 491571 /lib64/ld-2.5.so
28561:20111108:200831.000 315c21d000-315c21e000 rw-p 0001d000 fc:00 491571 /lib64/ld-2.5.so
28561:20111108:200831.000 315c400000-315c54e000 r-xp 00000000 fc:00 491575 /lib64/libc-2.5. so
28561:20111108:200831.000 315c54e000-315c74e000 ---p 0014e000 fc:00 491575 /lib64/libc-2.5. so
28561:20111108:200831.000 315c74e000-315c752000 r--p 0014e000 fc:00 491575 /lib64/libc-2.5. so
28561:20111108:200831.000 315c752000-315c753000 rw-p 00152000 fc:00 491575 /lib64/libc-2.5. so
28561:20111108:200831.000 315c753000-315c758000 rw-p 315c753000 00:00 0
28561:20111108:200831.000 315c800000-315c808000 r-xp 00000000 fc:00 491707 /lib64/libwrap.s o.0.7.6
28561:20111108:200831.000 315c808000-315ca07000 ---p 00008000 fc:00 491707 /lib64/libwrap.s o.0.7.6
28561:20111108:200831.000 315ca07000-315ca09000 rw-p 00007000 fc:00 491707 /lib64/libwrap.s o.0.7.6
28561:20111108:200831.000 315cc00000-315cc82000 r-xp 00000000 fc:00 492430 /lib64/libm-2.5. so
28561:20111108:200831.000 315cc82000-315ce81000 ---p 00082000 fc:00 492430 /lib64/libm-2.5. so
28561:20111108:200831.000 315ce81000-315ce82000 r--p 00081000 fc:00 492430 /lib64/libm-2.5. so
28561:20111108:200831.000 315ce82000-315ce83000 rw-p 00082000 fc:00 492430 /lib64/libm-2.5. so
28561:20111108:200831.000 315d000000-315d016000 r-xp 00000000 fc:00 491815 /lib64/libpthrea d-2.5.so
28561:20111108:200831.000 315d016000-315d215000 ---p 00016000 fc:00 491815 /lib64/libpthrea d-2.5.so
28561:20111108:200831.000 315d215000-315d216000 r--p 00015000 fc:00 491815 /lib64/libpthrea d-2.5.so
28561:20111108:200831.000 315d216000-315d217000 rw-p 00016000 fc:00 491815 /lib64/libpthrea d-2.5.so
28561:20111108:200831.000 315d217000-315d21b000 rw-p 315d217000 00:00 0
28561:20111108:200831.000 315d400000-315d414000 r-xp 00000000 fc:00 5221779 /usr/lib64/libz. so.1.2.3
28561:20111108:200831.000 315d414000-315d613000 ---p 00014000 fc:00 5221779 /usr/lib64/libz. so.1.2.3
28561:20111108:200831.000 315d613000-315d614000 rw-p 00013000 fc:00 5221779 /usr/lib64/libz. so.1.2.3
28561:20111108:200831.000 315d800000-315d83b000 r-xp 00000000 fc:00 492435 /lib64/libsepol. so.1
28561:20111108:200831.000 315d83b000-315da3b000 ---p 0003b000 fc:00 492435 /lib64/libsepol. so.1
28561:20111108:200831.000 315da3b000-315da3c000 rw-p 0003b000 fc:00 492435 /lib64/libsepol. so.1
28561:20111108:200831.000 315da3c000-315da46000 rw-p 315da3c000 00:00 0
28561:20111108:200831.001 315dc00000-315dc15000 r-xp 00000000 fc:00 492473 /lib64/libselinu x.so.1
28561:20111108:200831.001 315dc15000-315de15000 ---p 00015000 fc:00 492473 /lib64/libselinu x.so.1
28561:20111108:200831.001 315de15000-315de17000 rw-p 00015000 fc:00 492473 /lib64/libselinu x.so.1
28561:20111108:200831.001 315de17000-315de18000 rw-p 315de17000 00:00 0
28561:20111108:200831.001 315e000000-315e007000 r-xp 00000000 fc:00 492432 /lib64/librt-2.5 .so
28561:20111108:200831.001 315e007000-315e207000 ---p 00007000 fc:00 492432 /lib64/librt-2.5 .so
28561:20111108:200831.001 315e207000-315e208000 r--p 00007000 fc:00 492432 /lib64/librt-2.5 .so
28561:20111108:200831.001 315e208000-315e209000 rw-p 00008000 fc:00 492432 /lib64/librt-2.5 .so
28561:20111108:200831.001 315e800000-315e815000 r-xp 00000000 fc:00 492436 /lib64/libnsl-2. 5.so
28561:20111108:200831.001 315e815000-315ea14000 ---p 00015000 fc:00 492436 /lib64/libnsl-2. 5.so
28561:20111108:200831.001 315ea14000-315ea15000 r--p 00014000 fc:00 492436 /lib64/libnsl-2. 5.so
28561:20111108:200831.001 315ea15000-315ea16000 rw-p 00015000 fc:00 492436 /lib64/libnsl-2. 5.so
28561:20111108:200831.001 315ea16000-315ea18000 rw-p 315ea16000 00:00 0
28561:20111108:200831.001 315f800000-315f80d000 r-xp 00000000 fc:00 492431 /lib64/libgcc_s- 4.1.2-20080825.so.1
28561:20111108:200831.001 315f80d000-315fa0d000 --p 0000d000 fc:00 492431 /lib64/libgcc_s 4.1.2-20080825.so.1
28561:20111108:200831.001 315fa0d000-315fa0e000 rw-p 0000d000 fc:00 492431 /lib64/libgcc_s- 4.1.2-20080825.so.1
28561:20111108:200831.001 3161400000-3161411000 r-xp 00000000 fc:00 492437 /lib64/libresolv -2.5.so
28561:20111108:200831.001 3161411000-3161611000 ---p 00011000 fc:00 492437 /lib64/libresolv -2.5.so
28561:20111108:200831.001 3161611000-3161612000 r--p 00011000 fc:00 492437 /lib64/libresolv -2.5.so
28561:20111108:200831.001 3161612000-3161613000 rw-p 00012000 fc:00 492437 /lib64/libresolv -2.5.so
28561:20111108:200831.001 3161613000-3161615000 rw-p 3161613000 00:00 0
28561:20111108:200831.001 3164400000-3164402000 r-xp 00000000 fc:00 491713 /lib64/libkeyuti ls-1.2.so
28561:20111108:200831.001 3164402000-3164601000 ---p 00002000 fc:00 491713 /lib64/libkeyuti ls-1.2.so
28561:20111108:200831.001 3164601000-3164602000 rw-p 00001000 fc:00 491713 /lib64/libkeyuti ls-1.2.so
28561:20111108:200831.001 3678a00000-3678b2d000 r-xp 00000000 fc:00 492477 /lib64/libcrypto .so.0.9.8e
28561:20111108:200831.001 3678b2d000-3678d2c000 ---p 0012d000 fc:00 492477 /lib64/libcrypto .so.0.9.8e
28561:20111108:200831.001 3678d2c000-3678d4d000 rw-p 0012c000 fc:00 492477 /lib64/libcrypto .so.0.9.8e
28561:20111108:200831.001 3678d4d000-3678d51000 rw-p 3678d4d000 00:00 0
28561:20111108:200831.001 3678e00000-3678e90000 r-xp 00000000 fc:00 5215677 /usr/lib64/libne tsnmp.so.10.0.3
28561:20111108:200831.001 3678e90000-3679090000 ---p 00090000 fc:00 5215677 /usr/lib64/libne tsnmp.so.10.0.3
28561:20111108:200831.001 3679090000-3679094000 rw-p 00090000 fc:00 5215677 /usr/lib64/libne tsnmp.so.10.0.3
28561:20111108:200831.001 3679094000-36790c8000 rw-p 3679094000 00:00 0
28561:20111108:200831.001 3679200000-3679202000 r-xp 00000000 fc:00 491712 /lib64/libcom_er r.so.2.1
28561:20111108:200831.001 3679202000-3679401000 ---p 00002000 fc:00 491712 /lib64/libcom_er r.so.2.1
28561:20111108:200831.001 3679401000-3679402000 rw-p 00001000 fc:00 491712 /lib64/libcom_er r.so.2.1
28561:20111108:200831.001 3c62200000-3c62201000 r-xp 00000000 fc:00 5214172 /usr/lib64/libai o.so.1.0.1
28561:20111108:200831.001 3c62201000-3c62400000 ---p 00001000 fc:00 5214172 /usr/lib64/libai o.so.1.0.1
28561:20111108:200831.001 3c62400000-3c62401000 rw-p 00000000 fc:00 5214172 /usr/lib64/libai o.so.1.0.1
28561:20111108:200831.001 3c62600000-3c62885000 r-xp 00000000 fc:00 525205 /usr/lib/oracle/ 11.2/client64/lib/libnnz11.so
28561:20111108:200831.001 3c62885000-3c62984000 ---p 00285000 fc:00 525205 /usr/lib/oracle/ 11.2/client64/lib/libnnz11.so
28561:20111108:200831.001 3c62984000-3c629c6000 rw-p 00284000 fc:00 525205 /usr/lib/oracle/ 11.2/client64/lib/libnnz11.so
28561:20111108:200831.001 3c629c6000-3c629c8000 rw-p 3c629c6000 00:00 0
28561:20111108:200831.001 3c62a00000-3c64f8e000 r-xp 00000000 fc:00 527068 /usr/lib/oracle/ 11.2/client64/lib/libclntsh.so.11.1
28561:20111108:200831.001 3c64f8e000-3c6508e000 ---p 0258e000 fc:00 527068 /usr/lib/oracle/ 11.2/client64/lib/libclntsh.so.11.1
28561:20111108:200831.001 3c6508e000-3c6521b000 rw-p 0258e000 fc:00 527068 /usr/lib/oracle/ 11.2/client64/lib/libclntsh.so.11.1
28561:20111108:200831.001 3c6521b000-3c65240000 rw-p 3c6521b000 00:00 0
28561:20111108:200831.001 2ad13abe4000-2ad13abe7000 rw-p 2ad13abe4000 00:00 0
28561:20111108:200831.001 2ad13abf2000-2ad13abf5000 rw-p 2ad13abf2000 00:00 0
28561:20111108:200831.001 2ad13abf5000-2ad13abf7000 r-xp 00000000 fc:00 491709 /lib64/libdl-2.5 .so
28561:20111108:200831.001 2ad13abf7000-2ad13adf7000 ---p 00002000 fc:00 491709 /lib64/libdl-2.5 .so
28561:20111108:200831.001 2ad13adf7000-2ad13adf8000 r--p 00002000 fc:00 491709 /lib64/libdl-2.5 .so
28561:20111108:200831.001 2ad13adf8000-2ad13adf9000 rw-p 00003000 fc:00 491709 /lib64/libdl-2.5 .so
28561:20111108:200831.001 2ad13adf9000-2ad13adfc000 rw-p 2ad13adf9000 00:00 0
28561:20111108:200831.001 2ad13adfc000-2ad13ae06000 r-xp 00000000 fc:00 491546 /lib64/libnss_fi les-2.5.so
28561:20111108:200831.001 2ad13ae06000-2ad13b005000 ---p 0000a000 fc:00 491546 /lib64/libnss_fi les-2.5.so
28561:20111108:200831.001 2ad13b005000-2ad13b006000 r--p 00009000 fc:00 491546 /lib64/libnss_fi les-2.5.so
28561:20111108:200831.001 2ad13b006000-2ad13b007000 rw-p 0000a000 fc:00 491546 /lib64/libnss_fi les-2.5.so
28561:20111108:200831.001 2ad13b007000-2ad13b2e3000 r-xp 00000000 fc:00 491808 /lib64/libnss_ld ap-2.5.so
28561:20111108:200831.001 2ad13b2e3000-2ad13b4e2000 ---p 002dc000 fc:00 491808 /lib64/libnss_ld ap-2.5.so
28561:20111108:200831.001 2ad13b4e2000-2ad13b50e000 rw-p 002db000 fc:00 491808 /lib64/libnss_ld ap-2.5.so
28561:20111108:200831.001 2ad13b50e000-2ad13b540000 rw-p 2ad13b50e000 00:00 0
28561:20111108:200831.001 2ad13b540000-2ad1423b3000 r-xp 00000000 fc:00 525263 /usr/lib/oracle/ 11.2/client64/lib/libociei.so
28561:20111108:200831.001 2ad1423b3000-2ad1424b2000 ---p 06e73000 fc:00 525263 /usr/lib/oracle/ 11.2/client64/lib/libociei.so
28561:20111108:200831.001 2ad1424b2000-2ad1424b3000 rw-p 06e72000 fc:00 525263 /usr/lib/oracle/ 11.2/client64/lib/libociei.so
28561:20111108:200831.001 2ad1424b3000-2ad1424b8000 r-xp 00000000 fc:00 5215271 /usr/lib64/libnu ma.so.1
28561:20111108:200831.002 2ad1424b8000-2ad1426b7000 ---p 00005000 fc:00 5215271 /usr/lib64/libnu ma.so.1
28561:20111108:200831.002 2ad1426b7000-2ad1426b8000 rw-p 00004000 fc:00 5215271 /usr/lib64/libnu ma.so.1
28561:20111108:200831.002 2ad1426b8000-2ad1426dc000 rw-p 2ad1426b8000 00:00 0
28561:20111108:200831.002 2ad1426dc000-2ad142ee5000 rw-s 00000000 00:09 4096001 /SYSV680094f0 (d eleted)
28561:20111108:200831.002 2ad142ee5000-2ad143ee6000 rw-s 00000000 00:09 4128771 /SYSV780094f0 (d eleted)
28561:20111108:200831.002 2ad143ee6000-2ad1442e7000 rw-s 00000000 00:09 4161540 /SYSV740094f0 (d eleted)
28561:20111108:200831.002 2ad1442e7000-2ad145e1b000 rw-s 00000000 00:09 4194309 /SYSV670094f0 (d eleted)
28561:20111108:200831.002 2ad145e1b000-2ad1462e8000 rw-s 00000000 00:09 4227078 /SYSV730094f0 (d eleted)
28561:20111108:200831.002 2ad1462e8000-2ad1462ed000 rw-s 00000000 00:09 4259847 /SYSV530094f0 (d eleted)
28561:20111108:200831.002 2ad1462ed000-2ad1462ee000 rw-p 2ad1462ed000 00:00 0
28561:20111108:200831.002 2ad148000000-2ad148021000 rw-p 2ad148000000 00:00 0
28561:20111108:200831.002 2ad148021000-2ad14c000000 ---p 2ad148021000 00:00 0
28561:20111108:200831.002 7fff90ee2000-7fff90f07000 rwxp 7ffffffd8000 00:00 0 [stack]
28561:20111108:200831.002 7fff90f07000-7fff90f08000 rw-p 7fffffffe000 00:00 0
28561:20111108:200831.002 7fff90f62000-7fff90f66000 r-xp 7fff90f62000 00:00 0 [vdso]
28561:20111108:200831.002 ffffffffff600000-ffffffffffe00000 ---p 00000000 00:00 0 [vsyscall]
28561:20111108:200831.002 ================================
28561:20111108:200831.002 Please consider attaching a disassembly listing to your bug report.
28561:20111108:200831.002 This listing can be produced with, e.g., objdump -DSswx zabbix_server.
28561:20111108:200831.002 ================================