+++ This bug was initially created as a clone of Bug #716045 +++ For the last couple of days I've been getting a "Run As" dialog appearing every time I update Nightly on 64-bit Windows XP. This happened at least once yesterday and twice today. I suspect this is related to bug 481815. After I apply the update the small window saying something like "Nightly is being installed and will start sometime soon" with a progress bar appears and vanishes (as usual) then a "Run As" window appears just before the browser window appears. After I click "OK" to the "Run As" window I noted a program named helper.exe vanished from the Task Manager Process list. (I couldn't see all the processes, so there also could have been changes in the W-Z section of the list.)
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