Why does my MacBook Pro retina running 10.8.2 freeze upon wake?

This has happened at least twice: upon being awakened, the backlight of my MBP retina is on (the Apple logo is visible, but nothing is displayed on the LCD), the cursor is spinning but won't move, and touching the keyboard keys results in a system beep. The only solution is to hold down the keyboard power button.
Other freezes are occurring as well. There's no apparent disk directory damage as of yet (according to Disk Utility). I've ran Apple Hardware Test in loop mode just now (60 times), but it found nothing. Also has my local Apple Store run diagnostics overnight a few weeks ago, and nothing was found.
The only other variable I can think of is that once a day, I disconnect the MBP-r from a 27" Apple Cinema Display (display port model, not Thunderbolt) before going to work and reconnect it when returning home. Today the freeze happened when I reconnected the MBP, but the first freeze happened while at work.
Since I know that some are using Mountain Lion trouble-free (even MBP-r models), could these freezes the result of an interaction between hardware and software (i.e. a bug), or is are they the result of a problem with my user account?

Hello:
If your computer is in warranty, I would take it into an Apple store for diagnosis. What you describe should not happen.
Barry

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Why does my MacBook Pro retina running 10.8.2 freeze upon wake?

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