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Todays update didn't fix it so we still have to use this work around.
Same issue on DP6 here. Issue report 48858304.
Got it resolved by <fn-F8> starting the VM in Full screen (Spaces off), then selecting Repair your Computer from the advanced boot options. You...
Having the same issue here.
+1 After upgrading to 10.6.3 getting a nice black screen and can't even go in VGA mode...