Bug (crashes) appeared after upgrade to new version just 10 days ago. Specially after some modification in configuration. Yesterday I add 2 new hosts using clone previous and has several crashes - server working 1 to 6 hours and crashes

24711:20111214:164445.399 Sending list of active checks to [10.1.2.22] failed: host [10.1.2.22] not found
24719:20111214:164445.803 Sending list of active checks to [10.1.2.20] failed: host [10.1.2.20] not found
24673:20111214:164447.155 Got signal [signal:11(SIGSEGV),reason:128,refaddr:(nil)]. Crashing ...
24673:20111214:164447.155 ====== Fatal information: ======
24673:20111214:164447.155 Program counter: 0x7f84921fbf31
24673:20111214:164447.155 === Registers: ===
24673:20111214:164447.155 r8 = 29726576726553 = 11666254149608787 = 11666254149608787
24673:20111214:164447.155 r9 = 702087c4797a726f = 8079607009424077423 = 8079607009424077423
24673:20111214:164447.155 r10 = 657a6385c482c56f = 7312266371168126319 = 7312266371168126319
24673:20111214:164447.155 r11 = 202 = 514 = 514
24673:20111214:164447.155 r12 = 29c = 668 = 668
24673:20111214:164447.155 r13 = 6b2a70 = 7023216 = 7023216
24673:20111214:164447.155 r14 = e = 14 = 14
24673:20111214:164447.155 r15 = 4ee8c45c = 1323877468 = 1323877468
24673:20111214:164447.155 rdi = 2cbac5647761750c = 3223105518627288332 = 3223105518627288332
24673:20111214:164447.155 rsi = 1309660 = 19961440 = 19961440
24673:20111214:164447.155 rbp = 1309660 = 19961440 = 19961440
24673:20111214:164447.155 rbx = 7f848e82d358 = 140207303349080 = 140207303349080
24673:20111214:164447.155 rdx = e = 14 = 14
24673:20111214:164447.155 rax = 2cbac5647761750c = 3223105518627288332 = 3223105518627288332
24673:20111214:164447.155 rcx = 7250 = 29264 = 29264
24673:20111214:164447.155 rsp = 7fff443699e8 = 140734337817064 = 140734337817064