great article! but I think you mixed a little thing up. the old internet connections/modems do not support 56 kB/s but rather only 56 kbit/s. this is a big difference, since 56 kbit/s is equivalent to only 7 kB/s !!! The restriction of the XNA framework comes from the assumption that most live users have at least a ISDN connection which in turn has a bandwidth of 64 kbit/s which is equivalent to the magic number of 8 kB/s supported by the XNA network library...