When enabling content compression on my webserver (Apache 2.0.x) using SetOutputFilter DEFLATE SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary My websites mostly have no styles anymore. It seems that Firefox can't handle compression css files. When adding css to my exclude Env-Rule: SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png|css)$ no-gzip dont-vary ...everything works fine.

if you're using SSL, it's bug 222457

(In reply to comment #1) > if you're using SSL, it's bug 222457 Indeed, it is the same problem as #222457 - closing it. *** This bug has been marked as a duplicate of 222457 ***

Do you have a URL that reliably shows the problem? The biggest issue with bug 222457 is inability to reproduce it reliably...

(In reply to comment #3) > Do you have a URL that reliably shows the problem? The biggest issue with bug > 222457 is inability to reproduce it reliably... I don't understand this. I have to problems for years now. I had this problem using Apache 1.3. I had this problems on many different machines with many different projects. It is so obvious. Just set up a ssl host with these OutputFilter options and you'll see the problem. I fear the traffic...so I don't want to post a link here. Sorry.

It looks like inability to reproduce was due to this bug having been fixed for 6 months now (not in Firefox, but on the trunk).