Alright!!
To start off and wipe out all problems concerning my system, I have a High End Desktop. 1 GB of Ram, 2 x Intel Duo Core, Geforce 7900 GS etc etc so i figured could not be the problem at hand...
Also I lowered the settings to medium!
The game still crashes every 5 turns or 5-10 minutes. Either it freezes or more rarely the system reboots! Now I have already 10-15 times reinstalled the whole game...I've had that problem with patch 1.1 also so patch 1.2 is not the cause! It actually works fine.
Now I have attached my system log file to this thread, so anybody can take a look at it who thinks that he can help me...
Cheers