Ever since I upgraded my Dell XPS M1330 Vista 64-bit to Windows 7 64-bit, I've had an issue with my Logitech Bluetooth Travel Mouse. I would add the Bluetooth device and start using it but after a few minutes the mouse will no longer respond. Only method of troubleshooting was to remove the device and add it again. This would only give me a few minutes of use before it would fail again.
Searched for non existent Dell drivers for Windows 7. Tried Vista drivers. Contacted Logitech support for the latest BT 64-bit Setpoint software and still experienced the same issue. I read a post on Dell's forum and removed the Dell 355 Bluetooth driver and installed the Microsoft Generic Adapter.
I'm happy to report that 48 hours later the mouse is still working.
