iDVD playback skipping


I just got in iLife5 and created a home movie using iDVD/iMovie.

I was really impressed with the ease and professional output but when I played the dvd in my home dvd player, the video skips and "crumbles" a lot!

It's hard to explain...for those with satellite tv, it looks like the picture on your tv when it rains a lot and the signal is weak?

Any solutions because I want to make a bunch of these for family members?

My specs:

Dual 1Ghz G4
1 Gig RAM
80 Gig drive (60 gigs free)
Firewire hookup to camera
Cannon ZR80 camera
OSX 10.4.2
All software updates to everything