print spooler service problem

[OM]

The print spooler service cause instability on my Vista machine. When
the service is running, the Windows Sidebar doesn't work (no gadget show
up and can't add any). When I try to launch Adobe Reader/Acrobat,
nothing will happen. If I stop the print spooler service, all these
problem will be gone. I was told that I could have some corrupted print
drivers installed and it needed to be deleted. I tried enabling the
print spooler service, but all the printers are not there, and again I
can't add printers and do any printer related tasks.

Anyone has an idea?

Thanks