The problem is Google Tool Bar, disable it and you will be able to open more than three windows without FF locking up at 100% CPU usage. It worked fine before the Gutsy update.
-- 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 the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs