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User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050524 Fedora/1.0.4-4 Firefox/1.0.4

Description of problem:
I just upgraded to kernel-2.6.12-1.1390_FC4 today.  When I mount a DVD I get a hardlock.  This either on startup or while using.  The last messages on the log is 

Jul 13 02:20:51 draco fstab-sync[2561]: added mount point /media/cdrecorder for
/dev/hdc
Jul 13 02:20:52 draco kernel: hdc: command error: status=0x51 { DriveReady SeekComplete Error }
Jul 13 02:20:52 draco kernel: hdc: command error: error=0x54 { AbortedCommand LastFailedSense=0x05 }
Jul 13 02:20:52 draco kernel: ide: failed opcode was: unknown
Jul 13 02:20:52 draco kernel: ATAPI device hdc:
Jul 13 02:20:52 draco kernel:   Error: Illegal request -- (Sense key=0x05)
Jul 13 02:20:52 draco kernel:   Read of scrambled sector without authentication
-- (asc=0x6f, ascq=0x03)
Jul 13 02:20:52 draco kernel:   The failed "Read 10" packet command was:
Jul 13 02:20:52 draco kernel:   "28 00 00 1f ff 6a 00 00 02 00 00 00 00 00 00 00 "
Jul 13 02:20:52 draco kernel: end_request: I/O error, dev hdc, sector 8388008
Jul 13 02:20:52 draco kernel: Buffer I/O error on device hdc, logical block 1048501

This does not happen if I boot on kernel-2.6.11-1.1369_FC4

Version-Release number of selected component (if applicable):
kernel-2.6.12-1.1390_FC4

How reproducible:
Always

Steps to Reproduce:
1. Mount DVD
2.
3.
  

Actual Results:  hard lock of system

Expected Results:  mount of DVD

Additional info: