I've recently installed some modules including wysiyg, ckeditor, ajax comment, b2 nice comments.
I then noticed that my css files became cached and aggregated when inspect my pages. I unistalled all the modules and double checked the options in the performance menu which were correctly disabled.
The weirdest thing is that I restored the files and DB to an older version and it didn't help. I ported the site to another directory within the server (under a different domain) and the problem disappeared.
Anyone with similar experiences or ideas as to what might be the cause ?