Comment 4 for bug 947008

If a dialog pops up when you are working on other tasks, that is a bug that should be fixed in the window manager, not something that should be worked around with a hidden configuration key in every one of the many programs that need to open windows unprompted. Not only would that be gratuitously inefficient, it wouldn't even help most of the people experiencing the problem, because they wouldn't know the key exists. And that the Update Manager dialog is currently slow is similarly a bug that exists regardless of when it opens.