I spotted something wrong with my PC and immediately ran a check - noting discovered by avast. (Im constantly updated with latest updates and double checked this was the case)
I let symantec's online checker run and it reported the backdoor.nibu.d. Puzzled - why did avast report nothing wrong?
I reloaded AVG and it detected them straight away.
Unfortunately, I will no longer be using avast and all the recommendations I have made to friends has been retracted.
