ps:

USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.0   1568   528 ?        S    20:09   0:01 init [2]         
root         2  0.0  0.0      0     0 ?        SN   20:09   0:00 [ksoftirqd/0]
root         3  0.0  0.0      0     0 ?        S    20:09   0:00 [watchdog/0]
root         4  0.0  0.0      0     0 ?        S<   20:09   0:00 [events/0]
root         5  0.0  0.0      0     0 ?        S<   20:09   0:00 [khelper]
root         6  0.0  0.0      0     0 ?        S<   20:09   0:00 [kthread]
root         8  0.0  0.0      0     0 ?        S<   20:09   0:00 [kblockd/0]
root         9  0.0  0.0      0     0 ?        S<   20:09   0:00 [kacpid]
root        72  0.0  0.0      0     0 ?        S<   20:09   0:00 [kacpid-work-0]
root        73  0.0  0.0      0     0 ?        S<   20:09   0:00 [kacpid-work-1]
root        74  0.0  0.0      0     0 ?        S<   20:09   0:00 [kacpid-work-2]
root        75  0.0  0.0      0     0 ?        S<   20:09   0:00 [kacpid-work-3]
root        76  0.0  0.0      0     0 ?        S<   20:09   0:00 [kacpid-work-4]
root        77  0.0  0.0      0     0 ?        S<   20:09   0:00 [kacpid-work-5]
root        78  0.0  0.0      0     0 ?        S<   20:09   0:00 [kacpid-work-6]
root        79  0.0  0.0      0     0 ?        S<   20:09   0:00 [kacpid-work-7]
root        80  0.0  0.0      0     0 ?        S<   20:09   0:00 [kacpid-work-8]
root        81  0.0  0.0      0     0 ?        S<   20:09   0:00 [kacpid-work-9]
root       134  0.0  0.0      0     0 ?        S    20:09   0:00 [pdflush]
root       135  0.0  0.0      0     0 ?        S    20:09   0:00 [pdflush]
root       137  0.0  0.0      0     0 ?        S<   20:09   0:00 [aio/0]
root       136  0.0  0.0      0     0 ?        S    20:09   0:00 [kswapd0]
root       724  0.0  0.0      0     0 ?        S<   20:09   0:00 [kseriod]
root      1826  0.0  0.0      0     0 ?        S<   20:10   0:00 [khubd]
root      1935  0.0  0.0      0     0 ?        S    20:10   0:00 [kjournald]
root      2172  0.0  0.1   2428   916 ?        S<s  20:10   0:00 /sbin/udevd --daemon
root      2973  0.0  0.0      0     0 ?        S    20:10   0:00 [shpchpd_event]
root      3093  0.0  0.0      0     0 ?        S    20:10   0:00 [pccardd]
root      3176  0.0  0.0      0     0 ?        S<   20:10   0:00 [wrapper_wq]
root      3965  0.0  0.1   2152  1240 ?        Ss   20:10   0:00 /usr/sbin/acpid -c /etc/acpi/events -s /var/run/acpid.socket
root      4077  0.0  0.0   1680   496 ?        Ss   20:10   0:00 /bin/dd bs 1 if /proc/kmsg of /var/run/klogd/kmsg
klog      4079  0.0  0.1   2420  1344 ?        Ss   20:10   0:00 /sbin/klogd -P /var/run/klogd/kmsg
root      4104  0.0  0.1  10908  1792 ?        Ss   20:10   0:00 /usr/sbin/gdm
root      4116  0.0  0.2  11260  2548 ?        S    20:10   0:00 /usr/sbin/gdm
root      4119  3.7  3.3  36424 30084 tty7     Ss+  20:10   2:42 /usr/bin/X :0 -br -audit 0 -auth /var/lib/gdm/:0.Xauth -nolisten tcp vt7
hplip     4135  0.0  0.1  12872   920 ?        Ssl  20:10   0:00 /usr/sbin/hpiod
hplip     4152  0.0  0.5   9408  4680 ?        S    20:10   0:00 python /usr/sbin/hpssd
104       4226  0.0  0.0   2192   868 ?        Ss   20:10   0:00 /usr/bin/dbus-daemon --system
108       4241  0.0  0.5   6824  5420 ?        Ss   20:10   0:01 /usr/sbin/hald
root      4242  0.0  0.1   2716   988 ?        S    20:10   0:00 hald-runner
108       4247  0.0  0.0   2004   860 ?        S    20:10   0:00 /usr/lib/hal/hald-addon-acpi
108       4301  0.0  0.0   2008   792 ?        S    20:10   0:00 /usr/lib/hal/hald-addon-keyboard
108       4311  0.0  0.0   2008   820 ?        S    20:10   0:00 /usr/lib/hal/hald-addon-storage
108       4312  0.0  0.0   2012   820 ?        S    20:10   0:00 /usr/lib/hal/hald-addon-storage
root      4366  0.0  0.0   1552   260 ?        SNs  20:10   0:00 /usr/sbin/powernowd -q
root      4408  0.0  0.0   1968   708 ?        Ss   20:10   0:00 hcid: processing events
root      4412  0.0  0.0   1620   460 ?        Ss   20:10   0:00 /usr/sbin/sdpd
root      4427  0.0  0.0      0     0 ?        S<   20:10   0:00 [krfcommd]
root      4440  0.0  0.0   1624   296 ?        Ss   20:10   0:00 /sbin/mdadm -F -i /var/run/mdadm.pid -m root -f -s
daemon    4475  0.0  0.0   1800   396 ?        Ss   20:10   0:00 /usr/sbin/atd
root      4488  0.0  0.0   2116   832 ?        Ss   20:10   0:00 /usr/sbin/cron
root      4565  0.0  0.0   1564   496 tty1     Ss+  20:10   0:00 /sbin/getty 38400 tty1
root      4566  0.0  0.0   1564   496 tty2     Ss+  20:10   0:00 /sbin/getty 38400 tty2
root      4567  0.0  0.0   1564   496 tty3     Ss+  20:10   0:00 /sbin/getty 38400 tty3
root      4568  0.0  0.0   1560   492 tty4     Ss+  20:10   0:00 /sbin/getty 38400 tty4
root      4569  0.0  0.0   1560   492 tty5     Ss+  20:10   0:00 /sbin/getty 38400 tty5
root      4570  0.0  0.0   1560   492 tty6     Ss+  20:10   0:00 /sbin/getty 38400 tty6
lastnode  4583  0.0  1.0  19316  9780 ?        Ss   20:10   0:00 x-session-manager
lastnode  4625  0.0  0.0   4336   692 ?        Ss   20:10   0:00 /usr/bin/ssh-agent /usr/bin/dbus-launch --exit-with-session x-session-manager
lastnode  4628  0.0  0.0   2716   652 ?        S    20:10   0:00 /usr/bin/dbus-launch --exit-with-session x-session-manager
lastnode  4629  0.0  0.1   2192   952 ?        Ss   20:10   0:00 dbus-daemon --fork --print-pid 8 --print-address 6 --session
lastnode  4631  0.0  0.4   6052  3672 ?        S    20:10   0:00 /usr/lib/libgconf2-4/gconfd-2 5
lastnode  4634  0.0  0.0   2344   732 ?        S    20:10   0:00 /usr/bin/gnome-keyring-daemon
lastnode  4636  0.0  0.3   6256  2916 ?        Ss   20:10   0:00 /usr/lib/bonobo-activation/bonobo-activation-server --ac-activate --ior-output-fd=17
lastnode  4638  0.0  0.9  27160  8864 ?        Sl   20:10   0:03 /usr/lib/control-center/gnome-settings-daemon --oaf-activate-iid=OAFIID:GNOME_SettingsDaemon --oaf-ior-fd=25
lastnode  4650  0.0  0.2   3224  1812 ?        SL   20:10   0:00 /usr/bin/esd -nobeeps
lastnode  4655  0.0  0.0   2948   484 ?        Ss   20:10   0:00 /usr/bin/esd -nobeeps
lastnode  4658  0.7  0.9  15280  9028 ?        Ss   20:10   0:32 /usr/bin/metacity --sm-client-id=default0
lastnode  4665  0.3  1.7  34424 15560 ?        Ssl  20:11   0:14 gnome-panel --sm-client-id default1
lastnode  4667  0.1  1.8  75176 16336 ?        Ssl  20:11   0:04 nautilus --no-default-window --sm-client-id default2
lastnode  4670  0.0  0.5  17124  5196 ?        Ss   20:11   0:00 gnome-volume-manager --sm-client-id default4
lastnode  4676  0.0  1.2  30372 11084 ?        Ss   20:11   0:01 update-notifier
lastnode  4679  0.0  0.4   8616  3816 ?        Sl   20:11   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  45100  8048 ?        Sl   20:11   0:00 /usr/lib/gnome-applets/trashapplet --oaf-activate-iid=OAFIID:GNOME_Panel_TrashApplet_Factory --oaf-ior-fd=33
lastnode  4689  0.0  0.8  54088  7888 ?        Ss   20:11   0:00 gnome-cups-icon --sm-client-id default3
lastnode  4702  0.0  0.6  17716  5436 ?        Ss   20:11   0:00 gnome-power-manager
lastnode  4712  0.0  0.0   2288   804 ?        S    20:11   0:00 /usr/lib/nautilus-cd-burner/mapping-daemon
lastnode  4714  0.0  1.1  23072 10328 ?        S    20:11   0:00 /usr/lib/gnome-panel/clock-applet --oaf-activate-iid=OAFIID:GNOME_ClockApplet_Factory --oaf-ior-fd=37
lastnode  4717  0.0  1.3  31068 12292 ?        S    20:11   0:01 /usr/lib/gnome-netstatus/gnome-netstatus-applet --oaf-activate-iid=OAFIID:GNOME_NetstatusApplet_Factory --oaf-ior-fd=39
lastnode  4719  0.0  1.2  31088 10904 ?        S    20:11   0:00 /usr/lib/gnome-applets/mixer_applet2 --oaf-activate-iid=OAFIID:GNOME_MixerApplet_Factory --oaf-ior-fd=40
lastnode  4728  0.0  1.0  26780  9076 ?        S    20:11   0:03 /usr/lib/notification-daemon/notification-daemon
lastnode  4779  0.0  0.3  14620  2796 ?        Ss   20:11   0:03 gnome-screensaver
dhcp      4816  0.0  0.0   2336   536 ?        Ss   20:11   0:00 /sbin/dhclient3 -pf /var/run/dhclient.eth1.pid eth1
lastnode  4825  3.8  7.4 150772 67588 ?        Sl   20:11   2:41 /usr/lib/firefox/firefox-bin -a firefox
lastnode  4839  0.7  1.6  41912 15072 ?        Sl   20:11   0:31 xchat
lastnode  4847  0.5  2.4  60452 22312 ?        S    20:11   0:21 /usr/bin/python /usr/bin/gnome-btdownload file:///home/lastnode/Desktop/ubuntu-6.10-alternate-i386.iso.torrent
lastnode  5061  0.3  1.6  43340 14580 ?        Sl   20:15   0:12 gnome-terminal
lastnode  5063  0.0  0.0   2288   688 ?        S    20:15   0:00 gnome-pty-helper
lastnode  5064  0.0  0.3   5720  3464 pts/0    Ss   20:15   0:01 bash
lastnode  5147  0.0  0.3   5700  3424 pts/1    Ss+  20:16   0:00 bash
cupsys    5271  0.0  0.1   4208  1752 ?        SNs  20:16   0:00 /usr/sbin/cupsd
syslog    5426  0.0  0.0   1768   708 ?        SNs  20:17   0:00 /sbin/syslogd -u syslog
lastnode  8184  9.3  1.7  66776 15732 pts/0    S+   21:22   0:00 /usr/bin/python ./canoe
lastnode  8207  0.0  0.1   2396  1020 pts/0    R+   21:22   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      0   8348  50900 656356    0    0   212    40  384   730 10  2 85  3

free:

             total       used       free     shared    buffers     cached
Mem:           883        875          8          0         49        640
-/+ buffers/cache:        184        698
Swap:          988          0        988