> I am currently running 2.5 Stable 5 and want to upgrade to Stable 12. > Will my Stable 5 conf file work in Stable 12 ? Yes. I have updated from S3 until S12, using each version in between. Look into the cache.log (after starting the new squid) to see if squid complains about a setting. I had the problem that I just copied the executable over, but didn't update the error directory, so there were some files missing. Copying the new error directory over did help. Cheers, Ronny