User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:18.104.22.168) Gecko/20091221 Firefox/3.5.7 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:22.214.171.124) Gecko/20091221 Firefox/3.5.7 After clicking on the X button to close Firefox, the firefox.exe process in Task Manager uses close to 100% of the CPU. Attempts to open Firefox again through the start menu or desktop will give a notice along the lines of "there is already a firefox process running, please close that process or restart Windows". Firefox will not load until firefox.exe is terminated from Task Manager or Windows is restarted. Reproducible: Sometimes Steps to Reproduce: 1. Open Firefox. 2. Open a few websites in tabs (try: facebook.com, gmail.com, youtube.com) 3. Close Firefox. Actual Results: The computer responds extremely slowly and Task Manager shows firefox.exe using up close to 100% CPU. Expected Results: firefox.exe should have been properly terminated?
can you reproduce the issue within "safe-mode" (https://support.mozilla.com/en-US/kb/Safe+Mode) testing a set of certain sites what you know of producing your mentioned behaviour? maybe also disable temp. your security apps.
I've tried, but then again I haven't been able to reproduce this problem, safe mode or not, intentionally until it happens, and I realize I forgot to write down the list of sites I went to. Nobody else has the same problem?
I have not seen it with Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a1pre) Gecko/20091228 Minefield/3.7a1pre (.NET CLR 3.5.30729) ID:20091228043113.
I'm looking at something like this: http://www.flickr.com/photos/35560357@N03/4231616366/ I haven't been able to find out exactly what causes this though...
Unless you can reliably reproduce this we don't have enough information to investigate the cause.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 8 years ago
Resolution: --- → INCOMPLETE
I'm pretty sure it's caused by certain extensions, I heard one of them is Ghostery. Another one is the Winamp toolbar(I got it from installing Winamp itself, no Mozilla Add-on) I can confirm the second, after I removed it, everything worked perfectly fine. Adn I tried several times so I'm really sure of it.
J.Schmiddunser, please report problems with extension to the extension developers. Ghostery is bug 538160
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