Can't solve that problem since long days.
btw. this probelm only appears in the VMWare version. No problem with the cd-version:
BT3F-VMWare + monitor mode = freeze
No problem with the BT3F cd-version.
Sometimes, with much luck and after long waiting it pass and set the cardin monitor mode like it should. But mostly not.
+ VMWare workstation v6.5.1
+ fresh downloaded BT3F VMWare
+ alfa RTL8187 wifi usb card