I have just grabbed the latest version and unfortuntely it will not compile. I think this is unrelated to the previous problem. As per this thread:

http://www.zabbix.com/forum/showthread.php?t=7334&page=2&pp=10&highlight=Error+code

I had to make the change to configure with the additional "-lcurl" and my configure line looks as follows:

CFLAGS="-I/usr/local/include -L/usr/local/lib" ./configure --enable-server --with-mysql --with-net-snmp --with-libcurl --enable-agent

This completes fine, however the "make install" bombs out straight away with this:

bash-2.05b# make install
Making install in create
Making install in schema
Making install in misc
Making install in src
Making install in libs
Making install in zbxcrypto
source='md5.c' object='md5.o' libtool=no DEPDIR=.deps depmode=gcc /usr/local/bin/bash ../../../depcomp gcc -DHAVE_CONFIG_H -I. -I. -I../../../include -I/usr/local/include -L/usr/local/lib -I/usr/local/include/mysql -I/usr/local/include -I/usr/libdata/perl/5.00503/mach/CORE -I. -I/usr/local/include -c md5.c
In file included from ../../../include/sysinc.h:347,
from ../../../include/common.h:23,
from md5.c:54:
/usr/local/include/net-snmp/net-snmp-config.h:854: warning: `PACKAGE_BUGREPORT' redefined
../../../include/config.h:482: warning: this is the location of the previous definition
/usr/local/include/net-snmp/net-snmp-config.h:857: warning: `PACKAGE_NAME' redefined
../../../include/config.h:485: warning: this is the location of the previous definition
/usr/local/include/net-snmp/net-snmp-config.h:860: warning: `PACKAGE_STRING' redefined
../../../include/config.h:488: warning: this is the location of the previous definition
/usr/local/include/net-snmp/net-snmp-config.h:863: warning: `PACKAGE_TARNAME' redefined
../../../include/config.h:491: warning: this is the location of the previous definition
/usr/local/include/net-snmp/net-snmp-config.h:866: warning: `PACKAGE_VERSION' redefined
../../../include/config.h:494: warning: this is the location of the previous definition
In file included from /usr/local/include/net-snmp/mib_api.h:24,
from /usr/local/include/net-snmp/net-snmp-includes.h:71,
from ../../../include/sysinc.h:348,
from ../../../include/common.h:23,
from md5.c:54:
/usr/local/include/net-snmp/library/parse.h:32: warning: `MAXLABEL' redefined
/usr/include/arpa/nameser_compat.h:104: warning: this is the location of the previous definition
In file included from md5.c:54:
../../../include/common.h:132: redefinition of `struct option'

• • • Error code 1

Stop in /usr/home/zabbix/zabbix-1.4.2/src/libs/zbxcrypto.

• • • Error code 1

Stop in /usr/home/zabbix/zabbix-1.4.2/src/libs.

• • • Error code 1

Stop in /usr/home/zabbix/zabbix-1.4.2/src.

• • • Error code 1

Stop in /usr/home/zabbix/zabbix-1.4.2.

Also: http://www.zabbix.com/forum/showthread.php?t=6033
Also: http://www.zabbix.com/forum/showthread.php?t=7309