No errors in squid cache.log, nor in the access.log...but the error has since gone away and not come back, sorry about that....if it comes back up I will post a comment to squid-devel? -----Original Message----- From: Henrik Nordstrom [mailto:henrik@xxxxxxxxxxxxxxxxxxx] Sent: Tuesday, July 22, 2008 4:41 PM To: Ritter, Nicholas Cc: squid-users@xxxxxxxxxxxxxxx Subject: Re: Squid 3HEAD w/ tproxy : invalid headers clienterror On tis, 2008-07-22 at 14:27 -0500, Ritter, Nicholas wrote: > I am not sure if it site or application centric, but I have some HTTP > driven applications failing due to an error the the HTTP server sent > invalid reply headers. > So far the only application giving > this error is apt-get on ubuntu. I don't know how to begin > troublshooting this, but does anyone have suggestions on > troubleshooting it, or fixing it? Is there anything said in cache.log? Regards Henrik