Man, that's slow. :-(

[link|http://ubuntuforums.org/showthread.php?t=180093|Ubuntu Forums].

It may be a kernel+driver version issue if it's similar to [link|http://lists.centos.org/pipermail/centos/2005-February/045073.html|this] Centos thread.

HTH a bit.

Cheers,
Scott.