I had similar problems with the browser and it was caused by Javascript due to its high memory requirements (I have only 512 MB of RAM). I have installed Adblock plugin and it solved the problems. This plugin switches off Javascript by default and only for specified pages the Javascript can be enabled.
-- Firefox uses high CPU for extended periods of time when spawning a new window with many tabs already open https://bugs.launchpad.net/bugs/66350 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
