I am running Bitdefender Total Security 2011 on Windows 7 x64, and have run into an odd issue today.
The dashboard displays the warning: "This PC was scanned for viruses 15 days ago", which is untrue, as I ran a deep and full scan on it about a week ago.
Also, when I go into Antivirus, it shows the last run for Deep Scan as "never".
When I then run a Deep Scan, the virus scan executes for a few minutes, then shows it has completed far sooner than usual (a deep scan has never taken a handful of minutes for me before). After the scan, the warning on the dashboard briefly goes away, then within a couple of minutes, reappears, telling me again that the system has not been scanned in 15 days. The antivirus panel still shows Deep Scan status as having been run "never".
Of note, this didn't start happening until Bitdefender crashed on me after waking from hibernation earlier this morning.