It seems an ignoble thing to say, but the best thing about the 6200 is the case.

Really, Apple built it so crippled that as Trag remarked, it is a wonder it works at all!

So enjoy it...I think the advice about turning off Virtual Memory is the best advice; if you can install as much real memory (128MB?) as possible, that would also be the thing to do. Also...try not to run any other intensive tasks simultaneously with running iTunes.

Good luck!