A Squared is now on version 3. Might be worth updating!
As far as I know, a2 uses heuristic scanning so can pick up false positives. If you can't find any definite proof that this entry is part of some spyware, I'd be tempted to un-quarantine it.
Try scanning with other anti-spyware (such as Adaware or Spybot) and see if they pick up anything.