http://bugs.winehq.org/show_bug.cgi?id=12933
--- Comment #21 from edward savage epssyis@gmail.com 2010-05-01 23:48:17 --- Okay, I agree.
If it comes up again I will ask the person to collect some better information so there is actually some thing to work with.
My guess is this is related to the steam use of ms https which should be solved anyway when they update their webkit version. This may in fact be what they did this week? It would make sense as the news window and main windows were always the major generators of the slowdown.