When I start the spy-ware scan (full system or deep inspection scans) the scan suddenly stops when it reaches 29% or c:\Rollback.ini. I removed rollback and then it stoopped at c:\RHD setup log which I also removed, it then stopped at c:\recycler\desktop.ini.,a Intelligent Quick scan has no problems. I then put back the removed bestanden and tried to scan again and it stopped at (rollback .ini.) have I got an infection.Please help as I am not very good with these problems

Operating System:Windows XP Pro
Software Version:7.0
Product Name:ZoneAlarm Internet Security Suite