I've noticed that when I run a full virus scan using ZASS Version 7.0.462.00 on Windows XP Media Center Version Service Pack 2, the Windows key is activated.
Thus, if I press "R", I actually get <Windows> "R" and the Run Window is opened.
The fix is to hit the Windows Key several times while ZASS Virus Scan is running.
Then the keyboard works normally.
Operating System:Windows XP Home Edition
Product Name:ZoneAlarm Internet Security Suite