Cannot boot with cdrom and LVM

[Jason Martens <me@jasonmartens.com>]

I just installed Debian testing on my Dell Latitude C640.  I partitioned 
the hard drive with a 20G vfat partition, a 300M root partition, and a 
17G LVM physical partition.  I can sucessfully boot the system and mount 
the volume group and logical volumes when the cdrom is removed from the 
modular bay, but when it is inserted, I get an error message about not 
being able to find the physical volume during boot. 

I've tried googling, but haven't been able to find anything.  Becuase it 
is early in the boot process, I can't find any logs either.  If you can 
point me in the right direction, I would much appreciate it!

Thanks,
Jason Martens