http://bugs.winehq.org/show_bug.cgi?id=27048
--- Comment #22 from Bruno Jesus 00cpxxx@gmail.com --- The problem always starts in the decompression of a file, then the program quits all other tasks. Since many other network applications work fine in wine I don't think this is caused by winsock.
The xml file from the game has a list of files with compressed size, decompressed size and hash of files. It looks like the problem happens randomly in windows and more often in wine. The game probably does this decompression and hash test without windows API. I'll try to reproduce this myself.