Ran MBAM as suggested. No threats found. No mention of a reboot or of any items to be quarantined. Scan log text follows:
Malwarebytes' Anti-Malware 1.46
www.malwarebytes.orgDatabase version: 4649
Windows 5.1.2600 Service Pack 3
Internet Explorer 8.0.6001.18702
9/18/2010 8:55:28 PM
mbam-log-2010-09-18 (20-55-28).txt
Scan type: Full scan (C:\|)
Objects scanned: 255307
Time elapsed: 2 hour(s), 59 minute(s), 34 second(s)
Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0
Memory Processes Infected:
(No malicious items detected)
Memory Modules Infected:
(No malicious items detected)
Registry Keys Infected:
(No malicious items detected)
Registry Values Infected:
(No malicious items detected)
Registry Data Items Infected:
(No malicious items detected)
Folders Infected:
(No malicious items detected)
Files Infected:
(No malicious items detected)