Strange Graphics issue on switching users after awaking from sleep

As the title says... Here's the scenario:
I logon to my MBP, do some work, then put it to sleep.
My girlfriend comes along, and opens up the MBP. My logon details are presented to her, so she presses "Switch User".
When she does this, the MBP goes really funky. Loads of strange colors, some small areas of my logged in desktop appear, then loads of white cubes appear.
See:
http://www.rock-sound.net/stevetemp/stage1.jpg
http://www.rock-sound.net/stevetemp/stage2.jpg
Can anyone else confirm this happens on their MBP ? Otherwise Genius Bar here I come..

This happened on my iMac G5 and had the logic board and display replaced to no avail. Only happened when switching users.
Not happening on my MacBook Pro ... so far....and hope it stays like that.
Someone also said it might be to do with bad capacitors.

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Ref below.
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Message was edited by: danp26

Hello danp26,
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Strange Graphics issue on switching users after awaking from sleep

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