I met people with the same crash problems like me, and told me that unninstall and reinstall the game help a lot or even is the solution.
I am wondering how is a reinstall.
have you reinstall all the patches or just one "superpatch"?
Is there any problem with the key? or just enter again with my account?
I also going to change my antivirus, because I'm thinking heuristics and firewall may produce some of the crashes.