DriverStudio SoftIce Problem with USB Mouse

Hi, there.

I have a problem with Softice in DriverStudio 3.1 (2.7 also). My system is
Win2K(SP4) with Logitech cordless keyboard and mouse. The keyboard and mouse share one receiver, which in turn connects to a USB port.

The problem is, I can invoke softice window by Ctrl-D and keyboard works
fine, but the mouse does not move. More seriously, after I close softice
window by F5, the mouse is still unresponsive. It remains dead unless I
reboot the machine. However, if I don't touch the mouse when softice window
is present, after I press F5 the mouse works normally.

I tried many options in settings: Disable mouse support, Do not patch
keyboard driver, Disable USB keyboard patching, Disable USB mouse patching,
Mouse none. As long as I don't disable USB keyboard patching, other options
do not change anything. If I do, then even Ctrl-D stops working. I also
tried setting MouseType = 0x8103 in registry, still no luck.

I wonder if anyone has similar experience like this. Your help is appreciated.