yeah, if it were going through your ISP's router then you would notice a VERY drastic slowdown in the speed of ethernet, much slower than USB. ethernet is faster than USB, but not enough to really tell right away.

FWIW It took me around 11-12 hours to sync up 18.5 gigs of songs (and I get to do it all again with even more gigs after I rip all my cd's and correctly name and Tag all my singles mp3's, fun fun) (at about 30 gigs right now and about 4 stacks of cd's left)

eli