I have MSFT and Logitech wireless mice. Both behave poorly, requiring multiple clicks to select something, with the cursor lagging the mouse all of the time. I have new batteries, tried different work surfaces and both still don't work well. I tried a wired mouse which works fine. So the problem has to be interference, but from what? The only things that are anywhere nearby include 1) the tower computer 2) the LCD monitor 3) multiple power strips 4) multiple USB ports 5) wireless router is in the next room 6) printers on standby and 7) external hard drives. Any help would be appreciated. Thanks.