clamav-milteClamAv: accept() returned invalid socket (Result too large)

[lalev at uni-svishtov.bg]

What is causing this ?

The full message appears in /var/log/messages and looks like this:
mail clamav-milter: ClamAv: accept() returned invalid socket (Result too
large), try again

I get long series of this message on average twice a day at which time the
server gradually stops to process mail until I restart clamAV.

sendmail.cf
...
Xclmilter,      S=local:/var/run/clamav/clmilter.sock, F=T, T=S:4m;R:4m;E:5m
...

ps -axww|grep clam
787  ??  Is     0:11.53 /usr/local/sbin/clamd
815  ??  Is     0:00.09 /usr/local/bin/freshclam --daemon -p
/var/run/clamav/freshclam.pid
89956  ??  Ss     3:02.57 /usr/local/sbin/clamav-milter --pidfile
/var/run/clamav/clamav-milter.pid --postmaster-only --local --outgoing
--timeout=10 --max-children=100 /var/run/clamav/clmilter.sock