http://bugs.winehq.org/show_bug.cgi?id=32152
--- Comment #5 from sworddragon2@aol.com 2012-11-08 17:46:37 CST --- Are you sure that there is really a file access/modification? The In-Game clock is synchronized with the system clock so there is maybe no file access. This could all just happen in the memory.
I have now played for 1 day without ntp installed and the game hasn't crashed anymore every full hour too.