Norton IS has just blocked iPad sync/backup

NIS just raised a heuristic malware error for Bloodhound 115 on the backup snapshot file from my iPad sync operation.

I have done manhy successful backups before.   This is a first!!

Has anyone else had similar issue?

How do i locate the culprit?

afik the Appleverse is pretty closed, I only have apps from the Apple store.

I spoke to Apple call centre, the best they courl offer was to tell NIS to allow the activity but they had no idea what exactly it is I should be 'allowing'and then they fell back on suggetsing I turn NIS off.   (I have to assune the call centre rep in question was just having a bad day....).