Mouse tracking fails on dual screen (when not using Mouse Integration)

[Grant]

Using latest version of VB (4.0.2) and Windows 7

When VB window is placed on a non-primary desktop part of a dual screen (in my case, to the right extended desktop) the mouse tracking is all wrong/fails. This only happens for guests where Mouse Integration is not an option or enabled. The mouse tracking doesn't work and essentially the VM Windows is unusable in dual screen setups (like mine). The tracking events are stuffed up and the mouse is pushed as if back onto the primary desktop (when obviously you are in the window of VB in the secondary desktop/screen).