Ah yes. I just remembered that I've also managed to wear away the lining of the mouse where the thumb rests? Dunno how I did that but its rather obvious. That bit of the MX 1000 is a matt colour and the layer underneath is quite glossy.
Anyways thinking of getting a new mouse, my MX 1000 loves to interpret single clicks as double clicks. Gets rather ruddy annoying especially as it operates in a Jeckyl and Hyde fashion. One month it behaves, the next it doesn't and I scream myself hoarse.
Oddly enough only Logitech do a nice wireless mouse so my next one could be from them. Hmm am I an idiot?