When I boot off of Debian Kernel 2.6.26-2-686. This is what happens.
It stops at attached scsi generic sg5 type 0
After 4 or 5 minutes it comes back and says.
Gave up waiting for root device.
Common problems
Boot args (cat /proc/cmdline)
Check Root= (did the system wait for the right device)
Missing modules (cat /proc/modules; ls /dev
Alert /dev/sdd8 does not exist dropping to shell
/bin /sh: can’t access tty; job control turned off
If I boot off Debian Kernel 2.6.26-2-686 (single user mode)
Then use Control-D it boots fine.
When doing all the suggestions from the error message everything looks fine.

Any Help??

Does /dev/sg5 or /dev/sdd8 exist in your fstab?
If so, what are they and where do they get mounted?