droped packets

["khaled fawzy" <khismaeel () ecs gov eg>]

hello all ,
i hope all of you are ok and doing well.
i have two questions:
the first :
i run snort 2.0  over slackware the problem is my snort is dropping 55% from packets . how can i make snort analyze all 
the packets . my snort machine is P4 with 256 M RAM.
and my network is about 200 pc. and it is switched 100MB network.

the scond :
can snort run in 1GB network? and if so what the minimumm requirements in this snort machine.