I'm trying to figure out if I have a problem.
If I use top on the sles10sp3/oes2sp2 servers, I see a result of +90% memory usage.
But if I sort it after memory usage, then it shows only moddest use of memory.

top - 09:31:31 up 5 days, 10:58, 1 user, load average: 0.15, 0.08, 0.01
Tasks: 191 total, 2 running, 189 sleeping, 0 stopped, 0 zombie
Cpu(s): 1.0%us, 0.5%sy, 0.0%ni, 98.3%id, 0.0%wa, 0.0%hi, 0.2%si, 0.0%st
Mem: 2075488k total, 1881164k used, 194324k free, 34876k buffers
Swap: 2104472k total, 0k used, 2104472k free, 1201944k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5563 root 16 0 374m 88m 18m S 0 4.4 2:48.04 ndsd
5324 root 34 19 129m 65m 8148 S 0 3.2 1:00.27 zmd
6691 wwwrun 19 0 545m 29m 1956 S 0 1.5 0:05.65 java
5158 root 15 0 83572 9944 6840 S 1 0.5 92:53.54 owcimomd
5129 root 16 0 193m 7840 3996 S 0 0.4 0:37.37 httpstkd
6974 root 16 0 193m 7840 3996 S 0 0.4 8:32.13 httpstkd
8123 root 16 0 27788 6004 3956 S 0 0.3 0:00.13 smdrd
5521 root 16 0 9436 4752 2908 S 0 0.2 0:02.55 snmpd
6943 root 16 0 121m 4060 2408 S 0 0.2 0:00.49 ndpapp
6583 novlxreg 18 0 72552 3920 1276 S 0 0.2 0:00.54 novell-xregd
6718 wwwrun 20 0 225m 3688 1824 S 0 0.2 0:00.00 httpd2-worker
6720 wwwrun 20 0 225m 3684 1828 S 0 0.2 0:00.00 httpd2-worker
6722 wwwrun 23 0 225m 3660 1828 S 0 0.2 0:00.00 httpd2-worker
12323 root 16 0 9740 3640 2288 R 0 0.2 0:00.10 sshd
6693 root 16 0 8876 3524 2208 S 0 0.2 0:00.20 httpd2-worker
7856 root 19 0 32792 3448 2488 S 0 0.2 0:00.02 volmnd
4378 root 16 0 4748 3296 1444 S 0 0.2 0:00.50 hald
6626 root 16 0 5840 2928 556 S 0 0.1 0:00.00 novfsd
7722 root 17 0 7388 2856 2092 S 0 0.1 0:00.08 adminusd
7876 root 17 0 126m 2772 1824 S 0 0.1 0:00.04 ncp2nss
6694 wwwrun 18 0 8360 2616 1256 S 0 0.1 0:00.00 httpd2-worker
6497 root 16 0 61308 2540 1012 S 0 0.1 1:40.75 namcd
7805 root 20 0 31656 2292 1552 S 0 0.1 0:00.20 jstcpd
5784 postfix 16 0 5884 2076 1672 S 0 0.1 0:00.07 qmgr
12329 root 15 0 4184 2016 1484 S 0 0.1 0:00.06 bash
17064 postfix 16 0 5840 1948 1576 S 0 0.1 0:00.00 pickup
5721 root 16 0 5392 1836 1492 S 0 0.1 0:00.03 master
5516 root 16 0 4336 1728 1392 S 0 0.1 0:00.11 powersaved
16972 root 16 0 3192 1568 1140 R 0 0.1 0:00.44 top
7808 root 22 0 15220 1544 824 S 0 0.1 0:00.00 jstcpd
5354 ntp 16 0 4068 1468 1140 S 0 0.1 0:00.47 ntpd
5508 root 17 0 5000 1304 932 S 0 0.1 0:06.01 sshd
4750 root 15 0 2996 1280 1032 S 0 0.1 0:36.07 vmware-guestd
4351 messageb 16 0 4012 1092 796 S 0 0.1 0:00.72 dbus-daemon
4876 daemon 30 15 3516 1016 756 S 0 0.0 0:01.20 slpd
5412 root 15 0 40940 964 708 S 0 0.0 0:14.21 nscd
5349 root 16 0 2284 932 748 S 0 0.0 0:03.11 xinetd
5097 root 15 0 1952 808 584 S 0 0.0 0:00.01 syslog-ng
8137 root 22 0 2000 788 664 S 0 0.0 0:00.02 mingetty
8135 root 22 0 1996 784 664 S 0 0.0 0:00.02 mingetty
8138 root 22 0 1996 784 664 S 0 0.0 0:00.01 mingetty
8140 root 23 0 2000 772 656 S 0 0.0 0:00.00 mingetty
8136 root 21 0 2000 768 656 S 0 0.0 0:00.00 mingetty
8139 root 23 0 1996 768 656 S 0 0.0 0:00.00 mingetty
6563 root 16 0 1940 744 600 S 0 0.0 0:00.01 cron
1297 root 13 -4 2424 620 352 S 0 0.0 0:00.20 udevd
4672 root 23 0 1868 620 536 S 0 0.0 0:00.00 hald-addon-acpi
4715 root 16 0 1868 592 508 S 0 0.0 0:01.77 hald-addon-stor
5100 root 16 0 1708 520 320 S 0 0.0 0:00.00 klogd
4338 root 16 0 1568 512 428 S 0 0.0 0:00.00 acpid
5229 root 16 0 2108 484 392 S 0 0.0 0:00.33 irqbalance
5134 nobody 21 0 1612 404 324 S 0 0.0 0:00.00 portmap
4306 root 24 0 1664 304 212 S 0 0.0 0:00.00 resmgrd
1 root 16 0 732 280 240 S 0 0.0 0:01.68 init
2 root RT 0 0 0 0 S 0 0.0 0:17.81 migration/0
3 root 34 19 0 0 0 S 0 0.0 0:00.87 ksoftirqd/0
4 root RT 0 0 0 0 S 0 0.0 0:18.10 migration/1
5 root 34 19 0 0 0 S 0 0.0 0:01.07 ksoftirqd/1
6 root 10 -5 0 0 0 S 0 0.0 0:00.00 events/0
7 root 10 -5 0 0 0 S 0 0.0 0:00.00 events/1
8 root 11 -5 0 0 0 S 0 0.0 0:00.43 khelper
9 root 10 -5 0 0 0 S 0 0.0 0:00.00 kthread
13 root 10 -5 0 0 0 S 0 0.0 0:00.00 kblockd/0
14 root 10 -5 0 0 0 S 0 0.0 0:00.00 kblockd/1

I can see alot in the swap cache, so is that why it tells me the memory is used almost up??? and if it is so, then I guess it's not a problem as that will just be released when needed, right?