Network sync problems

Ok I have found the issue, but it just opens even bigger questions. The issue is that delta timing seems to be screwing up. I have this code (from the code archives in fact)

Type Delta
	Global Time:Float
	Global TimeDelay:Float
	Function Start() 
		TimeDelay = MilliSecs() 
	End Function
	Function Update() 
		Time = (MilliSecs() - TimeDelay) 
		TimeDelay = MilliSecs() 
	End Function
End Type

This works perfectly for a friend of mine, and I imagine most other people, but for me it is being inconsistent for me. It usually seems to work for the client (a Graphical Minib3D app) but the server is returning strange results when I check the deltatime variable, such as:

2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 
-2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 
-2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 
-2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 -2.00000000 
-2.00000000 -2.00000000 -2.00000000 -1.00000000 
-1.00000000 -1.00000000 -1.00000000 -1.00000000 -1.00000000 -1.00000000 -1.00000000 -1.00000000 
-1.00000000 -1.00000000 -1.00000000 -1.00000000 -1.00000000 -1.00000000 -1.00000000 -1.00000000 
-1.00000000 -1.00000000 

How is it even possible to get a negative value from this? Is there something wrong with Millisecs() in console applications?