I restart clamav and review logs and see this
Mon Jan 11 11:14:49 2010 -> +++ Started at Mon Jan 11 11:14:49 2010
Mon Jan 11 11:14:49 2010 -> clamd daemon 0.90.1 (OS: linux-gnu, ARCH: i386, CPU: i486)
Mon Jan 11 11:14:49 2010 -> Log file size limit disabled.
Mon Jan 11 11:14:49 2010 -> Reading databases from /var/lib/clamav
seems that clamav don't finish read the database. There are othe log entries and it seems reading the database needs up to 6 hours (!). Also clamav takes most CPU.