Crashes, everytime!!!

[Bake]

This is driving me mad, does anyone else have those "crashes-to-desktop" problems??

i reinstalled the game, installed the patch. start the game, go through tutorial, all fine. then i start my first mission and go on patrol, and go hunting. i played for an hour or so, sunk 3 ships, 2 tankers and 1 merchant. destroyers caught me, but i got away with minimal damage. then i tried to see through attack periscope and RRRRRRRRRRRRRR sound hangs, mousepointer from windows appairs and a messagebox (?) but i cant read whats in it, because the game is in front of it and i cant alt + tab toggle to see it.
this happens to me ALL the time i play silent hunter 5, and most of the time it crashed when i want to look through periscope, but also in other situations.

i restarded the game a few times, played a few hours, and it crashes all the time.....frustrating

and, there´s that savegame-problem that i also know from silent hunter 3 and 4:
when you save your game with any ships near, the game crashes when you want to reload. sometimes it works,sometimes it crashes after a few minutes in-game, or sometimes the ships are gone or in different positions.........

my specs:
intel e8200 overclocked and running stable@3,6ghz
geforce 8800 gts 515mb ram
2 gb corsair ram running @900mhz stable
win xp
nvidia 192.21

dont try to tell me that it has something to do with my overclocking, cause i ran severall burn-in tests, i watch my temp and it NEVER crashes in other games or programms, photoshop cs4, ableton live, modern warfare2, dragon age.....all fine !!!

so, i go to sleep....pissed and tired

ahhh, an