I have the same problem since the karkland update thing
And it's not just BF3, now i get this in BC2 as well (tried out just to see if it works)
The pb log has "O/S Exception Notice" spam
i tried closing everthing/stopping all non windows services/killing all non windows processes
Same thing
I updated using pbupdate, manually downloading htm files, ran pbsvc a few times etc
Nothing worked.
i even booted off the win7 disc and did SFC on my windows dir (this compares integrity and fixes system files)
Still nothing.
I uninstalled all things that might have a kernel driver or intrusive services (vmware, truecrypt, openvpn, daemon tools and sptd)
Still nothing.
I AM OUT OF IDEAS PEOPLE. HOW DO I GET RID OF "O/S EXCEPTION NOTICE"
i have filed a ticket with punkbuster but i haven't ran out of their precanned responses yet (like close all processes etc, WHICH I DID)
UAC IS OFF so i am ALWAYS ADMIN, and WINDOWS FIREWALL AND MICROSOFT SECURITY ESSENTIALS ARE OFF (even uninstalled mssec too, nothing)
origin overlay on/off = no difference
steam overlay on/off in BC2 = no difference
closing origin after BF3.exe starts = no difference