Thanks. Things are much better now. I have used the machine for 4 hours and no locking or freezing.

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KASPERSKY ONLINE SCANNER 7.0: scan report
Tuesday, March 9, 2010
Operating system: Microsoft Windows XP Home Edition Service Pack 3 (build 2600)
Kaspersky Online Scanner version: 7.0.26.13
Last database update: Tuesday, March 09, 2010 23:07:57
Records in database: 3751592
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Scan settings:
scan using the following database: extended
Scan archives: yes
Scan e-mail databases: yes

Scan area - My Computer:
C:\

Scan statistics:
Objects scanned: 43763
Threats found: 1
Infected objects found: 1
Suspicious objects found: 0
Scan duration: 02:09:03


File name / Threat / Threats count
C:\Documents and Settings\Pezzini\Application Data\Sun\Java\Deployment\cache\6.0\37\27ab4de5-4614b0cc Infected: Trojan-Downloader.Java.OpenConnection.at 1

Selected area has been scanned.