http://bugs.winehq.org/show_bug.cgi?id=29263
--- Comment #10 from Luca Bennati lucak3@gmail.com 2011-12-10 17:07:24 CST --- (In reply to comment #9)
Yes, that's when it runs the uninstaller. It's started in quiet mode so you get no feedback. Interestingly it shows a UI on Windows despite being started in quiet mode, so it looks like the parent installer mode has precedence, or something like that.
Possibly, but i got wary because on Vista it did not need all that time. I dunno about UI shown on Windows, it went so fast...