On 20/06/2015 2:55 p.m., HackXBack wrote: > i cant understand you , what you want from me to do exactly ? > we need to solve this problem > am using debian 7 Aha, okay. You need to install the squid3-dbg package to get the debug symbols used by gdb. Then run gdb like so: gdb /usr/lib/debug/usr/sbin/squid3 /path/to/squid3.core.file Amos