id summary reporter owner description type status component version resolution keywords cc guest host 9168 OSX host system lockup when starting Win7 guest with Ubuntu guest already running tony19 "Mac OSX (10.6.7) freezes when I try to start my Windows 7 guest while my Ubuntu guest is running. The system freezes when ""Starting Windows"" appears. The only resolution is to press and hold power button to shutdown and restart. " defect closed other VirtualBox 4.0.8 fixed Windows Mac OS X