I had the same problem(in tf2 tooMad Decent said:Ohhhh man, Good luck with that.. I had that mouse for 2 days before I returned it. The thing is soo crappy. The signal cuts out like every 5mins and your pointer doesnt do shit until you shake the damn mouse.
Seemed to always happen in the middle of firefights in TF2 :lol
Go buy yourself a G9 mouse... [IMG ]http://www.tomsgames.com/us/picturegalleries/20070810/g9_1.jpg[/IMG]
Logitech's support is amazing