[p4] What would this log entry mean?

[Marion, Patrick]

I can see the following error messages logged by the perforce server every 5
min:

Perforce server error:
	Date 2004/12/16 17:37:27:
	Connection from <someIPaddressHere> broken.
	TCP receive failed.
	read: socket: Broken pipe

and also (it truly says "from unknown"):

Perforce server error:
	Date 2004/12/16 17:32:28:
	Connection from unknown broken.
	TCP receive failed.
	read: socket: Broken pipe

What does this mean? How can I fix this?  Thanks!

Patrick