My xp system starts up very slowly 20-30 mins to start up then open the homepage in firefox.
1)I ran Ccleaner.
2)ran spybot s and d
3) I use avast
4) I ran disk clean up on C: (seems to hang/get stuck when "disk cleanup utility is cleaning up the unnecessary files) i.e. didnt finish
5) I am not sure if infected or just need to reinstall win xp (last install was a few years back)

malaware bytes log

Malwarebytes' Anti-Malware 1.46
www.malwarebytes.org

Database version: 4451

Windows 5.1.2600 Service Pack 3
Internet Explorer 8.0.6001.18702

20/08/2010 2:36:31 PM
mbam-log-2010-08-20 (14-36-31).txt

Scan type: Quick scan
Objects scanned: 146880
Time elapsed: 20 minute(s), 28 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 2
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:
HKEY_CLASSES_ROOT\popcaploader.popcaploaderctrl2 (Adware.PopCap) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\popcaploader.popcaploaderctrl2.1 (Adware.PopCap) -> Quarantined and deleted successfully.

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)

restarting then gmer scan