Slow data transfer across Windows LAN

I have 12 PCs hooked up in a peer to perr network. One of the PCs is a repository for backup of PC images. All PCs on the network have Windows 2003 XP PRO as the operating system.  When I back a PC up to the "Server" I use Drive Snapshot. This typically takes about 2-3 minutes per gigabyte of data. One of the PCs on the network is MUCH slower (about 10-15 minutes per gigabyte.

The PC that is much slower is a ThinkPad laptop PC (2 years old) that has the same Windows software and about the same CPU/RAM speed.  I thought it was connected via wireless, but I do not think that is the problem. I have it in a Docking Station (also fairly new).

Suggestions on what I might do to resolve this slowness?  I have run the PC from the docking station LAN card or directly from the laptop LAN port - same results.
HenryWilfredAsked:
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rindiCommented:
Connect it to another cable / port on the switch.
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