Why does it take nearly 11 hours to do a complete virus scan and spyware scan on my computer?
I have a quad processor w/ Windows Vista.
I have 3 Gb of memory; only 0.5 used.
I have 294 GB of free space available; only used 68 GB. Total available space on the computer is approx 390GB.
Any assistance would be aprreciated.

Operating System:Windows Vista Home Premium
Software Version:7.1 (Vista)
Product Name:ZoneAlarm Internet Security Suite