User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041103 Firefox/1.0RC2 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041103 Firefox/1.0RC2 If you run Firefox's uninstaller while Firefox is open, it tells you that Firefox is running, and that it needs to quit Firefox to continue. It says that it will automatically do so when you click OK, but there is no cancel button, so you are forced to close Firefox and lose any data (I had 3 Bugzilla tabs open, for example). Reproducible: Always Steps to Reproduce: 1. Open Firefox with at least one tab 2. Go to the Add/Remove Programs Control Panel 3. Attempt to uninstall Firefox Actual Results: A window appears telling you that it needs to quit Firefox, and that it will do so automatically when you click OK. Expected Results: In addition to the OK button, there should be a Cancel button in case you don't want it to quit Firefox for you. After it quits Firefox you can still cancel the uninstallation, but you should be able to cancel it before it forces Firefox to quit.
*** This bug has been marked as a duplicate of 233728 ***