Clamscan??? Falko, When I run top I noticed that clamscan is using up 98% of CPU in two services/jobs. Does this mean anything? Code: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2167 web3_user 25 0 14412 8932 996 R 49.5 1.7 0:29.89 clamscan 2185 web3_user 25 0 14280 8900 996 R 47.8 1.7 0:28.93 clamscan 10th September 2007 11:59 till: Sorry Till you were right all along. I guess when I ran top that time there was no email traffic at that time. So how was I supposed to know. This could be exactly why it slows everything down. Is there a way to switch to clamd? Thanks for your help. Falko & Till UPDATE: found solution for Fedora similar to Centos: http://www.howtoforge.com/forums/showthread.php?t=12864&highlight=clamd