Thanks everyone for your suggestion.

Have you added the OA exe file application's to the trusted processes in BhS and exclusions in setting's and the file system shield ?

Yes i have excluded the whole OA folder in FSS and oamine.exe process in BhS. Should i do something else. I just done a forum search and it seems like Avast 6.0 have some kind of problem with all the firewall application may be i should wait for next release of avast. The incompatibility problem might get solved in the next release.

I could not find anything regarding winpatrol though can anyone else confirm the incompatibility of winpatrol and avast…

@ Diselman I will give a second try to windows firewall but i am not that confident that i will able to cope with it.