Just tested with lastest experimental 34560 - problem persists, mouse can be moved, but jumps back to center of the screen. It does also not work, to rush for the "load" butten, as a mouseclick centers the mousepointer, too.
Maybe you should change the topic into something mor descriptive? "Help me" is not the most useful name for a post in a support / bug reporting forum ;-)
My mose is also rubber-banded to center of the screen. Tried it with a Microsoft Wirelss Laser Mouse 6000 and my good old Logitech Pilot - same trouble there. Unplugged any other USB-device except keyboard (Logitech G15). The problem occured firstly…