I can confirm this too. When I have many tabs open and I open a new window, processor consumption steadily climbs until it reaches 100% and then Firefox becomes completely unresponsive and I have to terminate it. The problem persisted even with a fresh profile. This started happening after the last Firefox security update. I have started using Firefox from an official mozilla.org tarball, and it doesn't seem to have the same problem.
-- 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
