Debian: "Waiting for root file system..."

After installation of Debian RC4 on my server I noticed that sometimes in hangs on boot with message like "Waiting for root file system...". I didn't know how to deal with this problem and as long as it appeared not often I didn't pay attention to this.

But then I decided to upgrade my kernel to the latest version (2.6.30.3 at that moment) and the new version hanged each time. I spend some time in Google and finally found the solution here http://www.debianhelp.org/node/11653. Big thanks to this guy for full description.

The problem hides in conflicts of kernel's devices naming convention and udev's one. For example, in my grub/menu.lst the root partition is /dev/hda1 while kernel considers it as /dev/sda1. I've solved this problem by using UUID's of devices.
$ blkid /dev/hda1
/dev/hda1: UUID="38ed6c23-3908-49f6-81eb-9945a173a60a" TYPE="ext3"
And then just typed this identifier into /etc/fstab and /boot/grub/menu.lst:

fstab:
{...}
UUID=38ed6c23-3908-49f6-81eb-9945a173a60a / ext3 defaults,errors=remount-ro 0 1
{...}
/boot/grub/menu.lst:
{...}
title Debian GNU/Linux, kernel 2.6.30.3
root (hd0,0)
kernel /boot/vmlinuz-2.6.30.3 root=UUID=38ed6c23-3908-49f6-81eb-9945a173a60a ro
initrd /boot/initrd.img-2.6.30.3
savedefault
{...}