To those still struggling with this problem, I've found only one solution that worked for me personally; I downgraded to VMware Fusion 4. Between this issue, and problems with unity recovering from sleep mode, I have come to believe that the upgrade was a complete waste of my money. In contract, VMware fusion 4 works perfectly, and 5 offers nothing I need that 4 lacks.
So my advice to you is get a refund, or don't upgrade at all if it's not too late. Save your money and buy something useful/good with it.