Everyone has that problem. Just wait for an update. It's luxor, not the halo of the DS.
Just chill and waste some time playing geometry wars.

 

Same problem, Im sure, they going to release another version this week or next week. Who know? Have you try playing on DS Emu? You can try other game like Rune Factory 2 & Final Fantasy IV. This is the game I played today.

 

Did you try an older Firmware version? That solved the compatibility problem with FFIV.

Not that I would downgrade my R4 to play a game that I don't even like. Just an idea for you guys that want to play it.

~Nero