windows installer runs at bootup

[good2]

On every bootup of XP Pro, windows installer runs.
Have no idea why, there is no no installation pending.
Did virus scan, all is ok.
MSIEXEC.exe is running in processes.
Went into msconfig to see what was loading on startup and there was nothing unusual.
Disabled all services and rebooted and that took care of it but that is not the solution.
Also went into registry to look uncer run, runonce, runonceex, and couldn't find anything.
Any ideas?
thx

[snowmonkey]

Have you installed Office XP by any chance ? (before this problem started)




cheers

[good2]

Yes it had been installed.
Took some windows xp updates through web update and thought that might be the reason.
Autoupdate in control pannel is off