User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/525.19 (KHTML, like Gecko) Chrome/220.127.116.11 Safari/525.19 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:18.104.22.168) Open Firefox Close Firefox Open Firefox (to srestart) --> get error: Existing instance of Firefox - must delete from Task Manager before Firefox can successfully start again. Deleted, uninstalled all previous versions of Firefox; re-installed 3.0.8 all over again, twice - problem persists. OPENING MULTIPLE TABS REPRODUCES THE PROBLEM - NOT SINGLE TAB ONLY Reproducible: Always Steps to Reproduce: 1. Open Firefox; OPEN/START MULTIPLE TABS 2. Close Firefox 3. Re-open (restart) Firefox 4. rECEIVE ERROR MESSAGE BELOW Actual Results: ERROR MESSAGE: "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system." Expected Results: FIREFOX STARTS AFTER ENDING FIREFOX.EXE FROM TASK MANAGER
Does this also happen in safe-mode? http://support.mozilla.com/en-US/kb/Safe+Mode
No, it is fine in safe mode
In that case find the addon that is causing this and notify the author about the issue. Please use the support for such kind of issues in the future brcause bugzilla is not for support
Status: UNCONFIRMED → RESOLVED
Last Resolved: 9 years ago
Resolution: --- → INVALID
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