NIS hangs at end of full scan after 2 hours (CcSvcHst.exe @ 50% / 268Mb) - cant stop it

Ive just run a full scan with Intelligent Skip Scanning OFF as iam testing scan times to help with another problem on NIS with my dads laptop

 

after waiting 2 hours for it its got right to the end scanning the last drive which had 9,000 files in it and its hung on an adblockplus .ini file? - also the norton service is constanly using 50% CPU and 268Mb memory

 

I cant quit or stop it - its just HUNG!

 

can anyone tell me why it has done this? is there another bug?

 

EDIT: no i havent PAUSED it - thats what it says when ive click stop scan then YES after its hung for 20 minutes

 

 

thanks