latest feisty kernel can't see hda

[Michael Hirsch]

I guess I deserved it.  I gave my wife a hard time about not getting
her updates, so last night she clicked "yes" on the upgrade to feisty.
 I'm trying to put the peices back together :-(

My main problem is that the new kernel (2.6.20-15) boots up, then
can't find /dev/hda.  The root partition is on hda, and the /home
directory is on sda.  It boots up and says that it couldn't find the
filesystem (I can't give you the exact quote because it isn't able to
write to the filesystem since it can't find it).

I can boot off an earlier kernel (2.6.17-11) and everything works fine.

I tried reinstalling the new kernel with no change in behavior.

Anyone seen this?

Michael