Behaviour of system tray bandwidth indicator

[Patrick O'Callaghan]

I'm using Dolphin to copy large files (several GB) to an NFS-mounted
NAS. This works fine except that the informational system tray pop-up is
showing absurd values for the copy bandwidth. e.g. a 2GB file is
declared to be finished when it's only just started. It looks like
what's being measured is the rate of handoff to network buffers. This
machine has a quad-core i7 CPU with 16GB of RAM and isn't doing much
else, so the entire file could be copied to system buffers very quickly.
However the actual LAN is 100Mbps so the real copy takes several
minutes, and it's only then that I get the pop-up saying it's finished.

Is this what's going on? Note that the copy does work correctly.

KDE 4.11.7 on F20.

poc