[exim] ownership ????????????

Am having problems with exiscan running clamav 0.80 and spamassassin
3.0running on SuSE 9.1 pro.

each app is run with the default installed user.

When running and the I get the following :- 'malware acl condition: clamd:
ClamAV returned /var/spool/exim/scan/1CS0dW-0007iD-Fl: Can't access the file
ERROR'

This is obviously an ownership/rights problem, but having changed each for the
other's owner to no avail. Where do I go from here ????????????

TIA,
Paul