[djmcmath]

Uploading concurrent with downloads is usually control-related traffic. As in, the other computer's saying "Here's some data," and your machine is saying "Right, got that." Normally, on a perfect connection, the other machine will hand you huge blocks of data, and your machine will roger up, and the ratio is great (like 1:50 or 100, I've forgotten what theoretical optimum is). When the connection is bad, the other machine hands over progressively smaller and smaller bits of data, and your machine spends more time complaining about it. "Here's a little piece of data, how's that?" "Oh, that's fer sheet, mate, try again."

So I'd guess you have a problem known as "wrong end of long copper wire" syndrome. Sorry for the grade-school description, but the formal terminology for network protocol junk has long since wandered out of my mind as useless.

Dan

PS -- solution? hahaha, beats me. Good luck.