http://bugs.winehq.org/show_bug.cgi?id=20449
--- Comment #1 from Sven septim.dt@gmail.com 2009-10-24 03:59:49 --- Please install gecko and test again. The automatic installer broke a few versions ago. You can install gecko using winetricks:
wget http://www.kegel.com/wine/winetricks
sh winetricks gecko