Memory.

Dear all,

I have a question for the system memory. I just add another 2G (now
there are 4G together) to my server (running redhat 7.2 smp). During the
boot up, the system can detect all the 4G memory. But when I use the
process management(kde) or system monitor (gnome), there are only 3647M
totally can be seen. I have no idea what could be wrong. Can anybody
give me some idea what could be wrong? Thanks a lot!

Best regards,
Joe Wang