Thanks for the reply, Nickrose, I read about Tread, which confirms to me that the problem is not only mine, however I already tried all ways: Antivirus and Firewall disabled Disconnect all other USB devices (the mouse is not connected via USB!) Checking the serial number from System Mode Set out Midi Clock Off Also changed PC Without all possible upgrades including Service Pack 3 for Windows XP No problem persists! If someone had my same problem help me please, thanks Mario
