disc errors on new machine

Is it just me or are other peeps getting a load of disc errors on 360 discs? i'm getting errors even with discs that are new. I look after my discs pretty good, they arent all scratched and messed up but i still get errors? What gives? xbox was always a bit flaky but my ps2 was always solid even with prewoened discs that were all scratched up.... does anyone else get this or should I take my 360 back for replacement or is 360 always a bit flaky like xbox was? i didn't wanna do that 'cos maybe they dont have any in stock, gah what a bummer