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I've seen this happen before, when diablo 3 was launched, so looks like its making a return with the latest patch.Every time I open my launcher that little window pops up, however I've never had it hang.I'm sorry I don't have any advice or help to give you, all I can say is I hope you figure it out =). I'm sure you had to delete in your task manager (if you are on Windows) I can't really remember how I managed it on OSX. So load it up, ctrl/alt/delete as usual then processes find and end the process restart.its pretty much this, I got dced from wow earlier today, and when trying to log back in it began to load the update tool, got to the wow launcher and stopped at 70%.I've tried several things, running wow as administrator, and my friend showing me how to delete the folder, but it didn't change anything. Every time I open my launcher that little window pops up, however I've never had it hang.
Equally at the time we were noticing other services, I think there was m Player, Ten, and there was another one which was Westwood Chat.