howdy, Yesterday I bought a new wireless mighty mouse. After using it last night and playing around with the features, I noticed the scroll ball wouldn't scroll to the left for the most part. Occasionally, if i pushed on the ball, it sometimes would move a bit, but not at the level of ease it scrolled right or up/down. Today, I returned it and got a replacement. I am experiencing the same problem, only with scrolling left. I have read about scrolling issues after use, but not right out of the box. Before I go back to the store and use the mice on display, is it a known feature of this mouse that scrolling LEFT is problematic, or did I just happen to get 2 from a bad batch?