http://bugs.winehq.org/show_bug.cgi?id=10905
--- Comment #4 from Ge van Geldorp ge@thinstall.com 2007-12-29 15:16:55 --- The Firefox demo on the Thinstall website was created with a rather old Thinstall version, which indeed didn't hook the SetFilePointerEx() function. We've rebuilt the demo with the latest Thinstall version so there's no need for the SetFilePointer() work around anymore.
With the latest Thinstall version, I did run into another problem though. Thinstall now calls SHGetFolderPath() with a non-NULL (and non-Default) token. I'll submit a patch to wine-patches to get the desired behavior.
I think this bug can be closed.