You're right, there's a few things LimeWire could do on the client side (that is, the downloader itself) to ease the burden on the uploader as well as help the downloader out by reusing the open connection. Namely, when it recognizes a host is busy, it could stop attempting to connect to it with any other downloaders, and when one download finishes, another downloader could reuse that same open connection to download the next file. Of course, a change like this would require some heavy infrastructure changes to the downloading code... It's something I've been wanting to do for quite awhile though, and it would help out both the downloader & uploader... so maybe it's finally time to do it.