Commented Unassigned: DirectSoundOut.Devices.Count() returns wrong value [16497]

Here is the code

Dim dscount As Integer = 0
dscount = DirectSoundOut.Devices.Count()

dscount value is 8. the correct value is 4.
if i see in watch window and evaluate expression " DirectSoundOut.Devices.Count() " then it gives integer and value 4.

What is wrong?
Comments: markheath: If i run dscount = DirectSoundOut.Devices.Count() 3 times it gives different result. thats the problem. (no sound card removed, or installed meanwhile)