UDT whenever I launch unity desktop or another program the windows installer comes up

If you are upgrading from a service pack do the following,

1. Copy the file from D:Data1.cabregcleaner.exe.
2. Paste to the C:documents and settingsUSERLocal SettingsTemp.
3. Run regcleaner.exe from the Temp directory.

If you have this problem you can resolve it with SP5 version 1.0.9.13 CD and above.