User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:184.108.40.206) Gecko/2009011913 Firefox/3.0.6 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:220.127.116.11) Gecko/2009011913 Firefox/3.0.6 After the Mozilla browser starts, I hear a lot of disk thrashing. When I invoke "Task Manager", the display shows high CPU usage for 10+ seconds and the app is displayed as "firefox". Also, I notice when I start "Task Manager" it seems as though Mozilla "firefox" detects the utility running and stops the disk thrashing. Say after some time > 3 to 5 minutes, the disk thrashing will start again. Task Manager again shows high CPU usage. What's happening? Reproducible: Always Steps to Reproduce: 1. Start Mozilla "firefox" borowser 2. Disk trashing starts after some time; maybe 1 to 5 minutes 3. Funny thing, I can stop the disk thrashing by starting Task Manager and in a few seconds, the thrashing stops. The high CPU activity is displayed (as "firefox") and then stops, as though the app is looking for Task Manager utility monitor running. Actual Results: If I don't start Task Manager the thrashing continues and after a while (say 4 to 7) minutes it will stop. Expected Results: If I start Task Manager, the thrashing stops after a few seconds. I don't the software (firefox) should cause constant disk thrashing, because a previous version of firefox didn't display this problem. Something has happened with later versions and updates.
Please make sure this isn't caused by an extension by running Firefox in it's safe-mode: http://support.mozilla.com/en-US/kb/Safe+Mode Or try a new profile: http://support.mozilla.com/en-US/kb/Basic+Troubleshooting#Make_a_new_profile
No response in more than half a year, closing this bug as INCOMPLETE. Please reopen with more information if you still can reproduce the issue with the latest trunk nightly build and a new profile: http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla-central/ http://support.mozilla.com/en-US/kb/Basic+Troubleshooting#Make_a_new_profile