User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9) Gecko/2008061004 Firefox/3.0 Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9) Gecko/2008061004 Firefox/3.0 Leaving a YouTube video playing AND a Java applet causes Firefox to hike to 28-30 in the CPU count of Activity Monitor. No performance hit, but my MacBook's fan begins to spin. Reproducible: Didn't try
Created attachment 329934 [details] Firefox CPU in Activity Monitor This is how Activity Monitor showed Firefox having a bad day.
Do you still see this problem using the most recent versions of all components? If you do not, please close the bug with resolution set to WORKSFORME. (Or INVALID if caused by an add-on) If you do see the problem, please comment in the bug.
No reply, INCOMPLETE. Please retest with Firefox 3.6.10 or later and a new profile (http://support.mozilla.com/kb/Managing+profiles). If you continue to see this issue with the newest firefox and a new profile, then please comment on this bug.