Hello, I am still having a issue with high CPU usage. In a previous post it was suggested that my ACL (which is 8k+ lines) could be the culprit. Also i am going to try a newer squid version, currently i am on 2.5.6 going to try both squid-2.5.STABLE14 and a squid2.6.x version I noticed in the FAQ that using --enable-gnuregex might help on large ACL's? http://wiki.squid-cache.org/SquidFaq/SystemWeirdnesses#head-91b0cf15c4781cd7b3248e3663ac85baef66e70f but the config --h info seems to indicate it might not. --enable-gnuregex Compile GNUregex. Unless you have reason to use this option, you should not enable it. This library file is usually only required on Windows and very old Unix boxes which do not have their own regex library built in. I am running Solaris 8 uname -a SunOS sfsysdev4 5.8 Generic_117350-45 sun4u sparc SUNW,Ultra-250 So just checking if the --enable-gnuregex might help, or should i go with squidgard or squirm some other redirector? Thanks for your help.