I have a Dell Latitude E6410 that I just yesterday upgraded to Natty. Everything seemed to go fairly well, save for one issue. The USB mouse that I have plugged into it shows *A LOT* of lag between what I'm doing with it and what shows up on the screen. When using the integrated trackpad or thumbstick, everything seems okay. I've played around with the sensitivity and acceleration in the settings menu, which helped a little, but the mouse is still pretty "muddy".

This issue occurs with both Unity and GNOME.

I hate using the thumbstick because I'm always accidentally bumping it while I type, and the thumbstick and track pad are on the same bus, so you can't have one without the other. I'd love to figure out what's going on with this mouse so that I can disable the thumbstick once again.

Thanks in advance to any and all.