User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6a) Gecko/20031013 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6a) Gecko/20031013 I think this one is very similar to bug 132858 but not quite. Run Netscape 7.1 with profile A, different from you regular Mozilla profile. Using the Windows Control Panel, try to uninstall a recent Mozilla trunk build. The Mozilla Installer says it can't continue but it has detected Netscp.exe is running. It gives you the option to shut down Netscape and continue. Maybe this is a won't fix, but my guess is that as long as any profile is locked Mozilla won't uninstall and that the uninstaller is not able to tell a Mozilla lock from a Netscape lock. Reproducible: Always Steps to Reproduce: 1. Run Netscape 7.1 with profile A 2. Fully shutdown Mozilla nightly that uses profile B 3. Try to uninstall Mozilla from the Windows Control Panel Actual Results: Warning pop-ups that Netscape needs to be shutdown for Mozilla uninstall to continue Expected Results: Uninstalled Mozilla while leaving Netscape running This could cause data loss in case Netscape 7 is used to compose a mail or a web page.
*** Bug 254028 has been marked as a duplicate of this bug. ***
I'm seeing this with Firefox too. But not hanging, just have to okay the close Netscape dialogs to continue with uninstall.
Seamonkey and Firefox are using a new NSIS based installer. resolving this old bug, please reopen if you still get this with the new installer