Hiya, N5 questions

I have an N5 card for my ds, and recently purchased an 8gb micro sd card to replace a 4gb one I've been using. The card works just fine for storing info and normal stuff, but I can't get it past the now loading screen on the ds. I'm using the N5's 1.32 software as well. I wouldn't imagine needing any more than a class 2 speed card, though I think my 4gb one is a class 4...

Any thoughts or suggestions?

Also while I'm at it, since I'm new here, any recommendations on other stuff that I can use with the N5? Just curious what I'm missing out on =-)

Thanks for any assistance!