I am connecting to internet using proxy connection. I am not able to update the antivirus even after specifying the proxy preferences. Pls help.

This is the reply i am getting.

ClamAV update process started at Tue Feb 24 01:47:30 2009
WARNING: Invalid DNS reply. Falling back to HTTP mode.
Connecting via 192.168.67.1
Reading CVD header (main.cvd): nonblock_recv: recv timing out (30 secs)
WARNING: remote_cvdhead: Error while reading CVD header from database.clamav.net
WARNING: Can't read main.cvd header from database.clamav.net (IP: 192.168.67.1)
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