During logging in on a Win Xp SP3 Home Edition system with 2 GHz Celeron CPU and 1 GB of RAM (old computer), I receive a transitory alert from Windows Security Center indicating that Bitdefender is turned off. On one account with password, the Bitdefender taskbar icon appears first and shows up normal (red). On another account without a password, the Bitdefender taskbar icon starts off red and then becomes gray. After a short time, the Windows Security alert taskbar icon then appears in both cases with the warning that Bitdefender is off. Eventually, the security alert disappears and in the second case, the Bitdefender taskbar icon returns to normal (red). Security Center ultimately indicates that virus protection is being provided by Bitdefender.
Installation History:
1) Uninstalled old BitDefender Antivirus 2008 with BitDefender_Uninstall_Tool.exe
2) Installed, activated and registered BitDefender Antivirus 2010
3) Uninstalled BitDefender Antivirus 2010 with BitDefender_Uninstall_Tool.exe
4) Installed, activated and registered BitDefender Antivirus 2010
Is this just a "cosmetic" defect? Can viruses be downloaded during the time Windows claims BitDefender is turned off? How can one be absolutely sure that Bitdefender Antivirus is running with all of its realtime protection?