Windows installer has stopped working message

Hi,

I keep getting the following error message popping up but as far as I am
aware programs seem to be working and nothing is being installed at the time.
'Windows installer has stopped working.... Windows will close the program
and notify you if a solution is available.
I am using Vista Home Premium and in spite of doing a couple of system
restores, this message pops up randomely once in a while.
What might be causing this to happen, is it worth system restoring back to a
much earlier date or can this problem be inherent, whatever date I go back to
restore?

Thanks

[Ashburn]

Make sure the "Windows modules installer" service is not disabled.
Log on as an Administrator -

• Start button || Control Panel ||System and Maintenance ||Administrative Tools
  
• Double-click Services
  
• (Provide the Administrator password or confirmation if prompted to do so.)
  
• Right-click the "Windows Modules Installer" service, and select Properties.
  
• Select General tab - make sure that Startup type is Manual.

Otherwise see all possible solutions by searching Windows Installer has stopped working .