I have run sfc/scannow - not problems. the winmgmt/repository scan didn't detect any errors. I ran a malware scanner and that deleted one suspicious file.
To be honest I can't be bothered to remove Panda and re-instal it again. I have been told by a Panda technician that it is a Windows problem, even though the issues started after the 10th August 2011. I don't want to use MSE as I don't trust the program.
On the forums, I've looked on, most people who have the action centre issue - re: action center reporting there isn't an anti-virus - have turned off the anti-virus and spyware reporting and this is what I have done.
Panda is protecting my computer, i have no issues with RAM, there are no integrity violations and there haven't been any BSODS.
I think I'm going to leave it, because if I do a clean re-install of Windows, once I have backed up my hard-drive, (I still have to buy a caddy), no doubt I will lose the System Restore function once more.