Why is the network so slow on one computer? everything freezes! help!

we have three computers all networked together, sometimes 4, and it works really well, until it comes into contact with the one computer. It has the same programs, same spec etc, but if I try to connect to it there are 3 hour waits for a tiny file to transfer, and often just connecting to it means a complete restart of all computers. I've tried switching cables, changing the plug in the wall but no use!
please help ! i'm running around with my ipod trying to move files around !!

Hi Becky;
May I welcome you to the Apple Discussion Forum.
In order to be of any help to you, you are going to have to give us much more information about how these computers are networked together.
For instance are they hard wired or do you use wireless?
What hardware is used to provide the routing and switching functionality for your network?
What operating systems do they all run?
Are they all Apple or is your network a mixture of Apple and Windows.
Allan
If you are interested in donating your spare CPU cycles to science, please try
http://teammacosx.homeunix.com/index.html

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