I had this problem some time ago and identified that ADOBE was at the
root. I uninstalled ADOBE reader and installed FOXIT instead. To
sort the problem I followed the instructions in the following:
'You cannot add a printer and you receive printer spooler error
messages in Windows XP' (
http://support.microsoft.com/kb/324757)
The problem recurred yesterday when somehow ADOBE got through again and
downloaded the new version of Reader. Once again the above
instructions sorted the problem. (It looks pretty complicated but
follow the stages carefully and it is OK)
--
willem