I had a huge problem with the game freezing in the elevator between the ruins and Tallon Overworld. It happened the a lot for two or three days, but it stopped the day I said "If it freezes again, I'm calling Nintendo." Apparently threatening the Gamecube works.
Oh, just a small shout-out to N's customer service. Whe Rogue Leader froze on me (every time), I called the Nintendo hotline to find out what the problem is. They said for me to ship them my games, system, controllers, and memory cards to see if it happened to anything else. I was really pissed off when they said it would take a month for it all to work. So I packed it up, sent it, and waited. Five days later, I got a package with brand new copies of games, new controllers, and a brand spankin' new Gamecube. The letter with it said that the problem was with the Gamecube and some discs were scratched during the experimental process, so they sent me brand new stuff to compensate. My memory cards came back a week later. So, go N. This is much better than Sony's "customer service".
-- ShockingAlberto