Mouseware 4.0.6 STILL has the same bug mentioned by others regarding Mouseware 4.0.5: After restart, the cursor/trackball would not always respond, even though trackball power indicator lights are active. Happens about 60% + of the time. Unplug trackball from keyboard, re-plug in would fix... Temporarily until next restart... So I try MW 4.0.6, exact same problem! Have carefully troubleshot to try to identify if there are any conflicting extensions, etc ( I am a Mac Tech), but NO, this bug is entirely within MouseWare... Running TrackMan Wheel (USB, to Keyboard to CPU, not via Hub) on OS 9.1, G3 466, exquisitely maintained