Clamav with MailScanner on Fedora 6

["Luís Fernando C. Talora"]

Fellows,

I sent this message before, but it seens it didn´t get to the list... 
I´ve just built a Fedora 6 box with Postfix + MailScanner + Clamav 
(installed via yum). MailScanner is working just fine, but, if I enable 
Virus Scanning, I see lots of messages like theese on maillog:
 
    Jan 22 12:10:44 barney MailScanner[6201]: clamav: Failed to 
complete, timed out
    Jan 22 12:10:45 barney MailScanner[6320]: Commercial scanner clamav 
timed out!
 
Is there any configuration I need to do on Clamav to make it work with 
MailScanner? I´ve reduced, on /etc/MailScanner/MailScanner.conf the 
"Virus Scanner Timeout" form 300 to 30 seconds (if I let 300 seconds, my 
mail queue becoumes huge and nobody sends or recieves messages for a 
long time).
 
Any tips?
 
Thanks a lot!
 
Best regards,
 
Luis Talora