ps:

USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.0   1568   532 ?        S    07:11   0:01 init [2]         
root         2  0.0  0.0      0     0 ?        SN   07:11   0:00 [ksoftirqd/0]
root         3  0.0  0.0      0     0 ?        S    07:11   0:00 [watchdog/0]
root         4  0.0  0.0      0     0 ?        S<   07:11   0:00 [events/0]
root         5  0.0  0.0      0     0 ?        S<   07:11   0:00 [khelper]
root         6  0.0  0.0      0     0 ?        S<   07:11   0:00 [kthread]
root         8  0.0  0.0      0     0 ?        S<   07:11   0:00 [kblockd/0]
root         9  0.0  0.0      0     0 ?        S<   07:11   0:00 [kacpid]
root        72  0.0  0.0      0     0 ?        S<   07:11   0:00 [kacpid-work-0]
root        73  0.0  0.0      0     0 ?        S<   07:11   0:00 [kacpid-work-1]
root       129  0.0  0.0      0     0 ?        S<   07:11   0:00 [aio/0]
root       128  0.0  0.0      0     0 ?        S    07:11   0:00 [kswapd0]
root       716  0.0  0.0      0     0 ?        S<   07:11   0:00 [kseriod]
root      1818  0.0  0.0      0     0 ?        S<   07:11   0:00 [khubd]
root      1829  0.0  0.0      0     0 ?        S<   07:11   0:00 [kacpid-work-2]
root      1928  0.0  0.0      0     0 ?        S    07:11   0:00 [kjournald]
root      2158  0.0  0.1   2428   920 ?        S<s  07:11   0:00 /sbin/udevd --daemon
root      2960  0.0  0.0      0     0 ?        S    07:11   0:00 [shpchpd_event]
root      3121  0.0  0.0      0     0 ?        S    07:11   0:00 [pccardd]
root      3184  0.0  0.0      0     0 ?        S<   07:11   0:01 [wrapper_wq]
root      4068  0.0  0.0   1680   492 ?        Ss   07:12   0:00 /bin/dd bs 1 if /proc/kmsg of /var/run/klogd/kmsg
klog      4070  0.0  0.1   2420  1348 ?        Ss   07:12   0:00 /sbin/klogd -P /var/run/klogd/kmsg
root      4095  0.0  0.1  10912  1784 ?        Ss   07:12   0:00 /usr/sbin/gdm
root      4107  0.0  0.2  11264  2548 ?        S    07:12   0:00 /usr/sbin/gdm
root      4111  2.5  3.0  33088 27652 tty7     Ss+  07:12   3:40 /usr/bin/X :0 -br -audit 0 -auth /var/lib/gdm/:0.Xauth -nolisten tcp vt7
hplip     4126  0.0  0.1  12872   916 ?        Ssl  07:12   0:00 /usr/sbin/hpiod
hplip     4143  0.0  0.5   9408  4684 ?        S    07:12   0:00 python /usr/sbin/hpssd
104       4217  0.0  0.0   2196   868 ?        Ss   07:12   0:00 /usr/bin/dbus-daemon --system
108       4232  0.0  0.5   6832  5424 ?        Ss   07:12   0:01 /usr/sbin/hald
root      4233  0.0  0.1   2716   988 ?        S    07:12   0:00 hald-runner
108       4238  0.0  0.0   2008   864 ?        S    07:12   0:00 /usr/lib/hal/hald-addon-acpi
108       4292  0.0  0.0   2004   796 ?        S    07:12   0:00 /usr/lib/hal/hald-addon-keyboard
108       4302  0.0  0.0   2008   864 ?        S    07:12   0:01 /usr/lib/hal/hald-addon-storage
108       4303  0.0  0.0   2012   820 ?        S    07:12   0:00 /usr/lib/hal/hald-addon-storage
root      4357  0.0  0.0   1556   260 ?        SNs  07:12   0:00 /usr/sbin/powernowd -q
root      4399  0.0  0.0   1968   712 ?        Ss   07:12   0:00 hcid: processing events
root      4403  0.0  0.0   1620   460 ?        Ss   07:12   0:00 /usr/sbin/sdpd
root      4418  0.0  0.0      0     0 ?        S<   07:12   0:00 [krfcommd]
root      4431  0.0  0.0   1624   296 ?        Ss   07:12   0:00 /sbin/mdadm -F -i /var/run/mdadm.pid -m root -f -s
daemon    4466  0.0  0.0   1804   400 ?        Ss   07:12   0:00 /usr/sbin/atd
root      4479  0.0  0.0   2120   836 ?        Ss   07:12   0:00 /usr/sbin/cron
root      4556  0.0  0.0   1564   492 tty1     Ss+  07:12   0:00 /sbin/getty 38400 tty1
root      4557  0.0  0.0   1560   488 tty2     Ss+  07:12   0:00 /sbin/getty 38400 tty2
root      4558  0.0  0.0   1560   492 tty3     Ss+  07:12   0:00 /sbin/getty 38400 tty3
root      4559  0.0  0.0   1560   492 tty4     Ss+  07:12   0:00 /sbin/getty 38400 tty4
root      4560  0.0  0.0   1564   496 tty5     Ss+  07:12   0:00 /sbin/getty 38400 tty5
root      4561  0.0  0.0   1560   492 tty6     Ss+  07:12   0:00 /sbin/getty 38400 tty6
lastnode  4574  0.0  1.0  19292  9776 ?        Ss   07:12   0:00 x-session-manager
lastnode  4616  0.0  0.0   4336   688 ?        Ss   07:12   0:00 /usr/bin/ssh-agent /usr/bin/dbus-launch --exit-with-session x-session-manager
lastnode  4619  0.0  0.0   2716   648 ?        S    07:12   0:00 /usr/bin/dbus-launch --exit-with-session x-session-manager
lastnode  4620  0.0  0.1   2196   964 ?        Ss   07:12   0:00 dbus-daemon --fork --print-pid 8 --print-address 6 --session
lastnode  4622  0.0  0.4   6044  3652 ?        S    07:12   0:00 /usr/lib/libgconf2-4/gconfd-2 5
lastnode  4625  0.0  0.0   2344   728 ?        S    07:12   0:00 /usr/bin/gnome-keyring-daemon
lastnode  4627  0.0  0.3   6252  2912 ?        Ss   07:12   0:00 /usr/lib/bonobo-activation/bonobo-activation-server --ac-activate --ior-output-fd=17
lastnode  4629  0.0  0.9  27164  8872 ?        Sl   07:12   0:03 /usr/lib/control-center/gnome-settings-daemon --oaf-activate-iid=OAFIID:GNOME_SettingsDaemon --oaf-ior-fd=25
lastnode  4640  0.0  0.1   3224  1604 ?        SL   07:12   0:00 /usr/bin/esd -nobeeps
lastnode  4646  0.0  0.0   2948   480 ?        Ss   07:12   0:00 /usr/bin/esd -nobeeps
lastnode  4649  0.3  1.0  15068  9104 ?        Ss   07:12   0:26 /usr/bin/metacity --sm-client-id=default0
root      4653  0.0  0.0      0     0 ?        S<   07:12   0:00 [kacpid-work-3]
lastnode  4667  0.2  1.6  34172 15232 ?        Ssl  07:12   0:22 gnome-panel --sm-client-id default1
lastnode  4669  0.0  1.6  72620 15384 ?        Ssl  07:12   0:01 nautilus --no-default-window --sm-client-id default2
lastnode  4672  0.0  0.5  17128  5220 ?        Ss   07:12   0:00 gnome-volume-manager --sm-client-id default4
lastnode  4676  0.0  0.9  46032  8800 ?        Sl   07:12   0:00 /usr/lib/gnome-applets/trashapplet --oaf-activate-iid=OAFIID:GNOME_Panel_TrashApplet_Factory --oaf-ior-fd=29
lastnode  4680  0.0  1.2  30376 11076 ?        Ss   07:12   0:01 update-notifier
lastnode  4685  0.0  0.4   8620  3820 ?        Sl   07:12   0:00 /usr/lib/gnome-vfs-2.0/gnome-vfs-daemon --oaf-activate-iid=OAFIID:GNOME_VFS_Daemon_Factory --oaf-ior-fd=31
lastnode  4687  0.0  0.8  54084  7884 ?        Ss   07:12   0:00 gnome-cups-icon --sm-client-id default3
lastnode  4706  0.0  0.6  17704  5448 ?        Ss   07:12   0:00 gnome-power-manager
lastnode  4713  0.0  0.0   2284   800 ?        S    07:12   0:00 /usr/lib/nautilus-cd-burner/mapping-daemon
lastnode  4716  0.0  1.3  31332 12500 ?        S    07:12   0:01 /usr/lib/gnome-netstatus/gnome-netstatus-applet --oaf-activate-iid=OAFIID:GNOME_NetstatusApplet_Factory --oaf-ior-fd=37
lastnode  4718  0.0  1.2  31088 10908 ?        S    07:12   0:00 /usr/lib/gnome-applets/mixer_applet2 --oaf-activate-iid=OAFIID:GNOME_MixerApplet_Factory --oaf-ior-fd=39
lastnode  4720  0.0  1.1  23148 10288 ?        S    07:12   0:00 /usr/lib/gnome-panel/clock-applet --oaf-activate-iid=OAFIID:GNOME_ClockApplet_Factory --oaf-ior-fd=41
lastnode  4730  0.0  1.0  26988  9256 ?        S    07:13   0:02 /usr/lib/notification-daemon/notification-daemon
lastnode  4788  0.0  0.5  14824  5168 ?        Ss   07:13   0:04 gnome-screensaver
lastnode  4825  4.2  7.1 140144 64828 ?        Sl   07:13   6:12 /usr/lib/firefox/firefox-bin -a firefox
lastnode  4830  0.6  2.0  45656 18380 ?        Sl   07:13   1:00 xchat
dhcp      4904  0.0  0.0   2340   544 ?        Ss   07:13   0:00 dhclient3 -pf /var/run/dhclient.eth1.pid -lf /var/lib/dhcp3/dhclient.eth1.leases eth1
lastnode  4912  0.1  1.8  51828 16704 ?        Sl   07:13   0:12 gnome-terminal
lastnode  4915  0.0  0.0   2288   684 ?        S    07:13   0:00 gnome-pty-helper
lastnode  4916  0.0  0.3   5692  3380 pts/1    Ss   07:13   0:00 bash
root      4949  0.0  0.1   3692  1204 pts/1    S    07:14   0:00 su
root      4952  0.0  0.2   3980  1868 pts/1    S    07:14   0:00 bash
root      4984  0.0  0.1   3964  1700 pts/1    S+   07:14   0:00 /bin/bash -i
lastnode  7259  0.0  0.3   5692  3440 pts/0    Ss   07:24   0:00 bash
root      7903  0.0  0.1   2156  1244 ?        SNs  07:35   0:00 /usr/sbin/acpid -c /etc/acpi/events -s /var/run/acpid.socket
cupsys    7929  0.0  0.2   4328  1900 ?        SNs  07:35   0:00 /usr/sbin/cupsd
syslog    8025  0.0  0.0   1768   704 ?        SNs  07:36   0:00 /sbin/syslogd -u syslog
root     11594  0.0  0.0      0     0 ?        S    08:06   0:00 [pdflush]
root     11900  0.0  0.0      0     0 ?        S    08:06   0:00 [pdflush]
root     14416  0.0  0.1   3136  1096 ?        Ss   08:13   0:00 /usr/bin/xfs -daemon
lastnode 17485  1.2  2.7  36844 24860 ?        S    09:29   0:06 /usr/bin/kate
lastnode 17489  0.0  0.8  25144  8112 ?        Ss   09:29   0:00 kdeinit Running...        
lastnode 17493  0.0  0.7  24456  7068 ?        S    09:29   0:00 dcopserver [kdeinit] --nosid --suicide
lastnode 17495  0.0  0.9  25092  8600 ?        S    09:29   0:00 klauncher [kdeinit]       
lastnode 17497  0.0  1.1  26568 10612 ?        S    09:29   0:00 kded [kdeinit]            
lastnode 17500  0.0  0.1   2740  1416 ?        S    09:29   0:00 /usr/lib/gamin/gam_server
lastnode 17523  0.0  0.9  25408  8220 ?        S    09:29   0:00 kio_file [kdeinit] file /tmp/ksocket-lastnode/klauncherTUDVCb.slave-socket /tmp/ksocket-lastnode/kateAHG3Ta.slave-socket
lastnode 17547  0.0  1.4  32272 13220 ?        S    09:30   0:00 knotify [kdeinit]         
lastnode 17550  0.2  0.6  10812  5576 ?        S    09:30   0:01 /usr/bin/artsd -F 10 -S 4096 -s 60 -m artsmessage -l 3 -f
lastnode 19552  0.6  1.5  28416 14400 ?        S    09:35   0:00 kio_uiserver [kdeinit]    
lastnode 19724 13.8  1.8  62228 16512 pts/0    S+   09:37   0:01 /usr/bin/python ./kayak
lastnode 19746  0.0  0.1   2396  1020 pts/0    R+   09:37   0:00 /bin/ps aux

vmstat:

procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in    cs us sy id wa
 0  0  12088  12468  40356 622416    0    0    69   136  403   708 10  2 86  2

free:

             total       used       free     shared    buffers     cached
Mem:           883        871         12          0         39        607
-/+ buffers/cache:        224        659
Swap:          988         11        976