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Have you tried it with other games and do they act the same?

What brand of mouse is it?
 
Did you install the drivers from the CD?
 
Is it USB?
Have you run the diagnostic software that comes with it?
 
Something else I ran across.

Originally posted by Arkestra
I get this in other games occassionally, I think it is to do with the fact that the pointer has to remain over the button for the start and end of the click, ie the depressing and unpressing of the button, otherwise it does not register. I think that's the problem here, sometimes I'm a bit frantic with the mouse and miss buttons on the depressing of the button.