Corrupt Saved Game Files

[Dillinger022]

My saved game files keep getting corrupted over and over again. I'm playing a campaign in the Black Sea with a Type IID. I have GW 2.0 installed over a clean stock SHIII patched to 1.4b. I had this problem when using older versions of GW. This is making the game virtually unplayable and I am very close to calling it quits with SHIII. I'm not going to keep sinking the same ships time and time again.

System Specs:
Operating System
-Windows XP (+ latest updates)
Processor
-AMD Athlon 64 X2 Dual-Core 4200+/2.2 GHz
Memory
-1024 MB RAM
Hard Disk Space
-160 GB
Video Card
-ATI Sapphire X1550 256MB (temporarily using this card whilst Asus card is being
RMAed)
-Asus GeForce EN7900GT TOP/256MB RAM
Sound Card
-Creative Labs Sound Blaster X-Fi Platinum/7.1
DirectX
-DirectX 10

Any help would be highly appreciated.
Thanks