ATi Extension is corrupted?

Question

Hi guys,
I was watching a movie when the screen went crazy and froze. It kept flickering, and everything on my screen was jagged.
I restarted the computer, forced, and after the logo and wheel, the screen turned white pixelated (right after the blue screen before login).
I can turn the mac on the safe boot mode, however.
A friend told me to move ATIxxxxxxx files from /system/library/extensions to elsewhere in order to start the mac normally, and it does so.
But, it seems i cannot play videos and assume that my friend's advice is a temporary solution.
Is there a permanent fix?
Do I find and update corrupted files?
My mac is Intel Core i5, 10.6.8, ATI Radeon HD 4850.

Answer 1

I figured out my issue.  This may be similar for others.
Scenario:  I attempted to UM enable a Lync user that I assigned an "available" number.  When I UM enabled I was presented with an error stating that the extension was already assigned to a user in the dial plan.
I did custom ldap searches for msRTCSIP-Line=tel:+1xxxxxx1234 - No results with this search.
I searched via the Lync ctrl panel filters for this number.  - No results returned.
I attempted the proxyaddress=smtp: search via custom ldap search in ADUC.  - No results.
What happened was a user was assigned Enterprise voice andded to a dial plan, then was moved over to the Aura system.  WHen this happened the number was given back to the pool, the user was set as PC>PC only.  This user did not have UM disabled
when removed from Lync Enterprise voice.
I was able to locate the user using the following commmands.  I found the user disabled UM, then was able to provision the new user without issue.
The command to do so is as follolws:  (plus  bonus commands for your enjoyment)
get-ummailbox | ForEach { If($_.Extensions -eq 4322){$.DisplayName}}
get-ummailbox | where { $_.Extensions -eq "45873" }
Get-UMDialplan -Identity "DefaultDialPlan" | Format-List
Hope this helps someone!
Enjoy
l1b3r4l