HDMI display issues after 10.8.2

Hi,
I just updated my Macbook Pro Retina to OSX 10.8.2. I often use my hdtv as an external display, that is, until after updating. Now whenever I connect my mbp to the tv via hdmi, the screen goes black and nothing but a cursor appears. The cable is fine, tried multiple cables, multple comps, none of the system preferences have been changed. Literally happened just after restarting with the update. Help?

Progress report:
Apple called me today, had me remove my third party SwitchResX multiple monitor program and preference pane, and also an com.apple.windows.xxx plist in th system preferences, followed by a reboot with a NVPRAM reset.
Neither of these solved the problem or changed it in any way.
They then had me redo the capture pocess while the HDMI cable was plugged in, send another 10 megs worth of data to them, and they have sent the new data back to engineering.
By the way, mjeick, besides the 10.8.2 upgrade did you also do the firmware upgrade? My suspicion is that the firmware is the source of the problem, and that Apple will have to do a new firmware update. If you didn't do the firmware update and still have the problem, I should let Apple know that.
Apple seems very interested and concerned about this. My rep, who is a high level guy, said he hadn't seen the engineering people get back to him this fast (less than one day) in a while.

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