Comment 13 for bug 84782

Running Ubuntu Server 6.06 LTS and Windows XP Prof client - both connected via Gigabit NICs and switch, I observed the following interesting fact:

Upload of a single file is extremely slow.
Concurrent upload of two files is much faster (not only more throughput but even much faster for each file)

Download of a single or two files faster than single upload but slower than double upload. Number of concurrent connections don't matter.

Have a look at the attachment, which nicely shows what I've just tried to explain.