http://bugs.winehq.org/show_bug.cgi?id=12597
--- Comment #1 from James Hawkins truiken@gmail.com 2008-05-04 00:39:36 --- I was taking a look at this bug, and I'm not positive, but I believe there is a regression in the riched control that causes a major slowdown when loading installer riched text. I've seen this recently with other installers.