Having lots of problems with all scans in 2010, also had the same problem with 2009 and binned it totally. Had Macafee on a 2 month trial with no problems at all however, the little woman deemed it wise to get Norton 2010 so now I'm stuck with it trying to get it to scan.
Everything opens fine but the scan does not happen and, when I try to cancel the scan it keeps running and I eventually have to switch off the PC.
Any help would be appreciated as I think Norton is one of the best about, Vista PC and Norton 2010.