How do I find the client slowing the server

[project3]

My server has slowed over the last week slowing to the point of all accounts being unreachable. How do I track down the client that is doing this. I can't possibly turn each person on and off looking for the person.

Is there a way to check and see whats happening and who it is, Im lost here?

Any help would be great.

 

[memdy]

Can you be a little more specific about the symptoms of the problem? Does the problem happen all the time or at specific intervals? When the problem occurs next you can run the top utility and look to see what process is consuming system resources and possibly the user running the process. Otherwise it might give you some insight to the problem.