Hi Dragonface

Thanks for the help.

No problems, except for your advice to “Run OTL and hit the cleanup button” -I couldn’t find a cleanup button.

I already had Malwarebytes but it was 122 days out of date. Have brought it up to date and run it and it found a bug in the registry:

Malwarebytes’ Anti-Malware 1.51.2.1300
www.malwarebytes.org

Database version: 7807

Windows 5.1.2600 Service Pack 3
Internet Explorer 8.0.6001.18702

27/09/2011 8:48:25 PM
mbam-log-2011-09-27 (20-48-25).txt

Scan type: Quick scan
Objects scanned: 161223
Time elapsed: 2 minute(s), 24 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 1
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:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop\NoChangingWallPaper (PUM.Hijack.DisplayProperties) → Bad: (1) Good: (0) → Quarantined and deleted successfully.

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)