i tested in win7 32 bit for almost a week with diff combination for fixing crash in diff tutorial out there, and nothing work. always crashed 10-15 mins, loading new map, etc. then i change to win7 64 bit, without adding/changing anything, it never crashed and i've played lots of maps and lots of hours . and i dont even hav to lower configuration or disable multicore nice release SmartPlay for 64bit win7 :D using: proc: dual core e2200 2.20ghz ram: 4gb vga: sapphire radeon 5570 os: win7 64bit