Possible to Roll back to 2011 Norton Internet Security?

Hey guys,

I have just recently installed the update to Norton 2012 Internet security. I think it may be effecting a game and I am wondering if I can roll back the version to 2011?

I have tried to find a download site to get the 2011 version without any luck, I was wondering if anyone would be able to help.

 

If I roll back the Anti-virus to 2011 and the problem still persists I can eliminate the Anti Virus version as the cause.

 

Thank you.