My Mac bluetooth mouse works both on my iMac (OS 10.6.8 ) and on the guest WinXP in VirtualBox (4.2.16 r86992). However, after iMac is waken up from hibernation after it's put to hibernation with VirtualBox on, Bluetooth on Mac becomes "Unavailable" (with a Bluetooth failure icon shown on the top right of the Mac screen). The mouse curser can still move, clicks still work, but the scrolling bar does not respond to the gestures (finger swiping on the mouse surface). The only way to revive the mouse fully is to quit VirtualBox.
How can I solve the problem without closing VirtualBox every time after iMac hibernation and wake up? (except putting iMac into No hibernation mode.)
P.S. I use the widget Deep Sleep 1.2 to hibernate my Mac.