What's up with my 360?

[onthebutton]

So, I bought my Xbox 360 in April. It's been great, and I love it. However, on some games, it "freezes" up, and I get a "disk read error". It always restarts just fine, and I've never had any issues besides this occurring. Sometimes it goes days without happening, sometimes it happens twice in one night. It doesn't scratch disks, and some games it's NEVER happened with (COD2 for instance).

Anyone else had this experience? What should I do? I got it at Best Buy, no extended warranty though. Any advice is much appreciated.

(PS--Save the "Xbox 360 = the sux0rs---get a Wii or PS3!" It's completely OT for this post, and I'm getting a Wii!