Comment 15 for bug 206635

I have the same error, also on the Dell Inspiron 530, after an upgrade from Gutsy to hardy.
But I cannot confirm that trying to boot the 2.6.22 Kernel which is still on the system after the upgrade works.
Adding all_generic_ide to the Kernel command line does the job.

What I find interesting is that I am quite sure that at first, even after the upgrade the system did at least one reboot quite well, as I did the upgrade some days ago, and rebooted after it as recommended. And the error only started to occur today, after I changed partitioning a bit.
But even resetting partitions to the previous state did not help - until I find this bug here.

Probably this came in parallel with another package update - so _maybe_ some changes in a security update in the last week did break the problematic things?!

Let me know if you need more data or info.