CentOS 5 Server :: ClamAV - All Primary Virus Scanners Failed

I'm having a little trouble with ClamAV. Everytime someone sends me an email I get this error in my Webmin Mail Log. Now the mail works and it goes to the quarantine or to the user mail box but this error fills up my mail log and I'm assuming it is not using ClamAV virus definitions to scan the mail? How would I get rid of this error?

I checked in my /etc/clamd.conf and I have AllowSupplementaryGroups yes. What can be causing this error?
I am using ClamAV 0.96.1
Spamassassin 3.3.12
PostFix 2.3.3
CentOS 5.5

Jun 21 09:57:53 localhost amavis[10714]: (10714-03) ask_av (ClamAV-clamd) FAILED - unexpected result: /var/amavisd/tmp/amavis-20100621T090618-10714/parts:
lstat() failed: Permission denied. ERROR
Jun 21 09:57:53 localhost amavis[10714]: (10714-03) WARN: all primary virus scanners failed, considering backups
Jun 21 09:58:01 localhost amavis[10714]: (10714-03) SPAM, <lovelovedsert12@yahoo.com> -> <acruel@email.com>, Yes, hits=20.638 tag=6 tag2=7 kill=7
tests=DKIM_ADSP_CUSTOM_MED=0.001, DRUGS_ERECTILE=2.221, FORGED_YAHOO_RCVD=1.022, FREEMAIL_ENVFROM_END_DIGIT=2.223, FREEMAIL_FROM=0.001,
FREEMAIL_REPLYTO=2.775, FREEMAIL_REPLYTO_END_DIGIT=0.98, FSL_HELO_NON_FQDN_1=0.001, HELO_NO_DOMAIN=0.001, INVALID_DATE=0.432, MISSING_MID=0.14,
NML_ADSP_CUSTOM_MED=1.2, RCVD_IN_BRBL_LASTEXT=1.644, RCVD_IN_BSRN=2.5, RCVD_IN_RELAYS_ORDB=3, RDNS_NONE=1.274, TVD_RCVD_SINGLE=1.213,
T_TO_NO_BRKTS_FREEMAIL=0.01, quarantine spam-9665 (maia-spam-quarantine)
Jun 21 09:58:01 localhost amavis[10714]: (10714-03) Blocked SPAM, [212.96.9.34] [212.96.9.34] <lovelovedsert12@yahoo.com> -> <acruel@email.com>, Hits: 20.638, 8508ms