cpu eater

[Alex]

Hallo boys and girls,
Lately I noticed that something/someone is eating up my cpu.
ie. when I launch digikam (with a lot of photos) here's what's going on:

alex at playland:~$ top
top - 19:12:45 up  2:33,  1 user,  load average: 2.95, 1.41, 0.87
Tasks:  84 total,   1 running,  83 sleeping,   0 stopped,   0 zombie
Cpu(s):  2.3% us,  0.7% sy,  0.0% ni,  0.0% id, 96.7% wa,  0.0% hi,  0.3% si
Mem:    516300k total,   508124k used,     8176k free,    41436k buffers
Swap:  1510068k total,    12532k used,  1497536k free,   153944k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 8652 root      15   0  343m  85m 3580 S  0.3 17.0   4:08.83 Xorg
 8928 alex      15   0  101m  48m  25m S  0.3  9.7   2:25.94 amarokapp
14460 alex      16   0  2128 1084  844 R  0.3  0.2   0:00.06 top
    1 root      16   0  1560  528  460 S  0.0  0.1   0:01.10 init
    2 root      34  19     0    0    0 S  0.0  0.0   0:00.00 ksoftirqd/0
    3 root      10  -5     0    0    0 S  0.0  0.0   0:00.17 events/0
    4 root      10  -5     0    0    0 S  0.0  0.0   0:00.01 khelper
    5 root      10  -5     0    0    0 S  0.0  0.0   0:00.00 kthread
    7 root      20  -5     0    0    0 S  0.0  0.0   0:00.00 kacpid
  123 root      10  -5     0    0    0 S  0.0  0.0   0:00.31 kblockd/0
  149 root      15   0     0    0    0 D  0.0  0.0   0:00.26 pdflush
  150 root      15   0     0    0    0 S  0.0  0.0   0:01.03 pdflush
  152 root      11  -5     0    0    0 S  0.0  0.0   0:00.00 aio/0
  151 root      15   0     0    0    0 S  0.0  0.0   0:00.71 kswapd0
  737 root      15   0     0    0    0 S  0.0  0.0   0:00.00 kseriod


No process is using more than 0.3% of the cpu but there is 96.7% wa.

For starters wtf is that wa? :)
and for a second question, do you have any ideas of what could be causing 
this, where to look or what more info you might need? (I know these are three 
questions... :) )

ubuntu-5.10/linux-2.6.12-10-k7
-- 
Cheers, Alex
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