I confirm this issue in the version of Firefox currently distributed with Ubuntu 10.10.
In my case this started happening when I upgraded from Ubuntu 10.04 to 10.10. In my case the screen doesn't dim but I guess this is because I don't have Compiz enabled. ** Changed in: firefox (Ubuntu) Status: Opinion => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/800517 Title: While the pages are loading , firefox freezes(minimise it and it disturbs my screen) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/800517/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs