Snort drops packets!

["Vögeli Urs, voegeurs" <voegeurs () zhwin ch>]

Hi
 
When i turn off snort, it makes the following statistic:
 
===================================================
Snort analyzed 32524out of 33250packets, dropping 726(2.183%) packets
===================================================
 
I have Intel P4 2.4Ghz, 1024Mb RAM, 100Mbit network interface
 
Network throughput max 20Mbps 
 
My Question: is it normal that snort drops any packets, and why??
 
Thanks!
voegeurs

Content Security by MailMarshal