Description of problem:
RHEL5.2-Server-20080124.nightly installer gets stuck at 
"Partitioning Type" dialog -- anaconda does not initialize
system hard drives (it actually put my drive into driveList() at first, but
removed it few steps later: "removing drive sda from disk lists").

Same results for drives with both initialized and uninitialized partition table.
Same results in both text and graphics mode.

Version-Release number of selected component (if applicable):
anaconda-11.1.2.89-1 / RHEL5.2-Server-20080124.nightly

How reproducible:
Always

Steps to Reproduce:
1. Boot RHEL5.2-Server-20080124.nightly installer
2. Make it all the way through stage2 to the "Partitioning Type" dialog
  
Additional info:
RHEL5.2-Server-20080124.nightly is actually not installable (bug #429902),
I made it to the stage2 after I fixed the errors in stage2 images locally.