As above. Using a Diamondback 'Salamander Red' mouse on an Icemat 2E black, and while 99% of the time it works great...SOMETIMES, it just seems to 'stick' or something - won't move outside an area on the screen smoothly or something. Guessing it's a tracking issue, as I only noticed it today when it got REALLY hot in the house and I was using the mouse a lot for some precision work - kinda got a little sweaty on the pad (only downside to using glass pads - they seem to attract liquid) and I think it was mousing over that which caused the problem. Hence, question as to the pad - would a different *color* be any better? More textured pad? etc?