is this ok ?


Memory Usage
Type Percent Capacity Free Used Size
Physical Memory 96% 18.52 MB 483.25 MB 501.77 MB
Disk Swap 0% 1019.74 MB 0.00 KB 1019.74 MB

Your not using any swap so it looks ok.. but 96%.. where are you getting these stats from? Can you paste the output of the "free" command from SSH.

linux probably uses available RAM for disk cache, so you should be OK. really, do as the previous poster suggests and instead print the 'free' output since it shows the cache size, too.

type top, or free; it tells you how much is free...

18:28:10 up 2 days, 1:45, 1 user, load average: 0.05, 0.01, 0.00
59 processes: 57 sleeping, 2 running, 0 zombie, 0 stopped
CPU states: 100.0% user 0.0% system 0.0% nice 0.0% iowait 0.0% idle
Mem: 513808k av, 497288k used, 16520k free, 0k shrd, 80820k buff
308412k actv, 0k in_d, 16124k in_c
Swap: 1044216k av, 564k used, 1043652k free 233372k cached

PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND
14491 root 15 0 1104 1104 860 R 99.9 0.2 0:00 0 top
1 root 15 0 104 84 56 S 0.0 0.0 0:04 0 init
2 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 keventd
3 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kapmd
4 root 34 19 0 0 0 SWN 0.0 0.0 0:01 0 ksoftirqd_CPU
9 root 25 0 0 0 0 SW 0.0 0.0 0:00 0 bdflush
5 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kswapd
6 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kscand/DMA
7 root 15 0 0 0 0 SW 0.0 0.0 0:55 0 kscand/Normal
8 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kscand/HighMe
10 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kupdated
11 root 22 0 0 0 0 SW 0.0 0.0 0:00 0 mdrecoveryd
15 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kjournald
113 root 23 0 0 0 0 SW 0.0 0.0 0:00 0 khubd
4456 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kjournald
4784 root 15 0 732 568 456 S 0.0 0.1 0:00 0 dhclient

Your top validates piramida's post--you are using ~233 megs of RAM for cache. That is not only normal, it is preferred.