iLife 11 DVD Won't Open

I have a late 2007 MacBook running OS 10.6.5. When I insert my new iLife 11 DVD, nothing happens... I have to eject the DVD using the F12 key.
History:
- The OS 10.6 DVD read just fine under Leopard, hence the successful install.
- Other DVDs read/mount just fine.
- iLife disk spins for a few seconds, then stops. No response from the drive.
- F12 Eject works.

HW Info:
ATA Bus:
MATSHITACD-RW CW-8221:
Model: MATSHITACD-RW CW-8221
Revision: GA0K
Serial Number:
Detachable Drive: No
Protocol: ATAPI
Unit Number: 0
Socket Type: Internal
Low Power Polling: Yes
Power Off: Yes

Any help would be appreciated.