My regularly scheduled scan seemed to "find" and instance of a virus called "Win32.trojan.Delf.ak" but I can't be sure. The scan seemingly "froze" with this item named as "current data" under "scan details." I left it alone for about an hour in case it was taking a bit to get the file clean, then canceled out and manually reran a system virus scan which this time found nothing. I do, however hear my harddrive chugging when nothing that I'm aware of is actually going on in my computer, leading me to believe that there is indeed a virus in my system. Any info on what's going on, whether I should believe the results of my rescan? If this is a virus that is still in my system, how do go about getting rid of it?

OS -- Win XP (sp2)
CPU -- Athalon 64

Operating System:Windows XP Pro
Product Name:ZoneAlarm Internet Security Suite
Software Version:6.5