On Sat, 4 Sep 2010, Emin Akbulut wrote:

If cpu usage is normal then it's related to DNS or
online things, it maybe wait for communication...

I think the -L parameter disables online checks.
Just try without online checks. Also use -D for debug.

Another posibility for delay would be waiting for locks for some
kind of DB update (autowhitelist or Bayes).

Good clue, check CPU during message processing. If high for duration
then probably bad rule regex or possibly some kind of spin lock on
DB access.
If mostly low then waiting for some kind of resource; DNS, communication
with external service (EG DCC), database access, etc.

--
Dave Funk                                  University of Iowa
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