I have a Mac mini with BT mouse/keyboard. Keyboard is great. The mouse seems sluggish. It doesn't seem to move smoothly and isn't as precise as other mice I've used with PCs. This is my first Mac. Batteries are new. I've tried it on a mouse pad, and on my desktop. Still the same results. It just doesn't feel right. I plugged in a wired optical 2-button w/scroll and it moves much better. Anyone else have issues with the Apple BT mouse?