Hallo, Marc, Du meintest am 25.02.11: >>> our squid crashes from time to time without logging error >>> messages. I started gdb on the core file - disclaimer: gdb >>> is totally new for me - and here is what gdb says: >> >> [...] >> >>> Version: Squid 2.6.STABLE18 on Ubuntu 08.04 LTS >> >> What about updating to an actual version, p.e. 2.7STABLE9 or 3.1.11? [...] > I just want to rule out that a likely cause for this issue are > Hardware failures, defect RAM or something like that, that cannot be > fixed by installing a new version. May be a colleague some hours away has a similar problem (with squid- 2.6STABLE16, the system is about 3 years old); next week I'll watch that system. Simple changing to a newer version (slackware based) doesn't work; at least "libexpat" is missing ... Viele Gruesse! Helmut