Confirmed. Having Facebook on the active tab makes CPU use for firefox and Xorg spike, using a a combined 70-80% of one core on a Core 2 Duo T5500. Moving to another tab makes both processes return to normal.
The high CPU usage does not seem to come with a related memory leak. To test that the bug is on firefox and not on Xorg, i installed Opera and ran facebook on it. No signs of the bug were observed in Opera. -- [intrepid] opening facebook in firefox raises cpu usage https://bugs.launchpad.net/bugs/280012 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
