It happens to me too, sometimes it forces me to hard reboot to continue working (happily the session restoring works well) see "Kudzu9 wrote on 2008-03-2"
*** It seems to me that it's happening when at least 1 html sheet contains flash content *** All updates made Mozilla/5.0 (X11; U; Linux i686; fr; rv:1.9) Gecko/2008061015 Firefox/3.0 Ubuntu 8.04 (hardy) Gnome 2.22.2 Kernel 2.6.24-19-generic Memory free (~62%) HDD free (a lot) -- 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