http://bugs.winehq.org/show_bug.cgi?id=15237
--- Comment #12 from Carey careysub@gmail.com 2009-08-01 14:21:21 --- I discovered that rendering in Textpad 4 which I had also installed under Wine was also corrupted.
Further investigation traced the problem to my: ~/.wine/dosdevices/c:/windows/fonts directory.
The Mathematica installer had replaced the original fonts (if any) with a set of Mathematica fonts but which did not appear to work properly.
I fixed the problem by replacing the ~/.wine/dosdevices/c:/windows/fonts contents with the c:/windows/fonts contents from my Windows XP system that had Mathematica installed. This restored both Textpad and Mathematica.