I did, last night run into some games that lagged a bit, but usually the ping was major high on that server so with 56k I stick to the lower ones
I am for sure gonna get a broadband connection as I agree, this opens up a whole new aspect to this game....it's just amazing being able to duel other players in 3d, seeing your spells light up the place or setting out on a hearty adventure with some close friends online.
My major problem is that DSL costs way too much (40 some bux a month) and i'll never pay that for any internet connection...as far as cable goes i'm looking into it but I don't know if it's available where I live....