I am trying Gentoo 1.4rc1 for the first time on my laptop. For some reason, whenever I warm boot (ie shutdown -r ) and the kernel loads and starts trying to mount the root partition, I get the following error message:
VFS: Cannot open root device "hda6" or 03:06
Please append a correct "root=" boot option
The really weird thing is, if I just shutdown the machine and cold boot, everything works just fine. Any pointers on how to start debugging this issue? Here's some information about my system:

Thinkpad 570e one single FUJITSU 12GB IDE drive.
/dev/hda1 ==> /boot 100MB
/dev/hda5 ==> swap 500MB
/dev/hda6 ==> / 10GB
Both / and /boot are ext3, I have ext3, ide support compiled into the kernel (ie not configured as modules). My grub config looks like this:
default 0
timeout 5
title=Linux
root (hd0,0)
kernel /boot/bzImage root=/dev/hda6