kswapd0 hangs

[wizhippo]

Problem:

When doing a backup kswapd0 always hangs.
Does it both localy  and remotely and via ssh

System:
Linux 2.6.5 vanilla
Dual PIII 1.2GHz, 2GB Ram, RAID SCSI

I can't get SysReq to do a dump, but I do have the ouput of top before 
it hangs.

here is the command i'm using
tar -vc -- /root /etc /home /usr/local /var /usr/portage/packages | 
bzip2 -c | split -b 500m - /mnt/backup/backup-$(date +%Y%m%d).tar.bz2- &

top - 11:47:10 up  2:39,  2 users,  load average: 6.83, 2.96, 1.46
Tasks:  90 total,   4 running,  86 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.5% us,  0.5% sy,  0.0% ni,  0.0% id, 98.8% wa,  0.2% hi,  0.0% si
Mem:   2072512k total,  1399844k used,   672668k free,      200k buffers
Swap:  3919840k total,       28k used,  3919812k free,   296472k cached

 PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
  13 root      15   0     0    0    0 R  0.1  0.0   0:01.17 kswapd0
7606 root      17   0  8868 7784 1404 R  0.1  0.4  19:01.98 bzip2
   1 root      15   0  1484  496 1336 S  0.0  0.0   0:07.20 init
   2 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/0
   3 root      34  19     0    0    0 S  0.0  0.0   0:00.00 ksoftirqd/0
   4 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/1
   5 root      34  19     0    0    0 S  0.0  0.0   0:00.00 ksoftirqd/1
   6 root       5 -10     0    0    0 S  0.0  0.0   0:00.00 events/0


nothing shows up in my logs.

If you can tell me how to get more info to help let me know.
I wish I had more for you.
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