I think I know what happened.....
When I went to close out my Security Center after the scan, the notification came up "program not responding...wait or end now"...blah blah blah. I waited for the process to end itself and it did'nt, so I clicked to "end now". Of course, it mentioned something about stuff not being saved if I chose that option. Oh well...my loss.
The scan showed no issues, though.
I Know yetserday there was an update issued for mcafee that required a reboot.Did you recieve that and reboot??Not sure if that would affect a scan though.If you open Mcafee click navigation and about you can see if you recieved these updates.I recieved them for virus scan and site advisor.At which time it requested a restart.
No update like that yet. My ISP is fairly slow in getting these out...seems like several months. I first got my Security Center updated the end of February.