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My late model 2008 MBP still has the shutoff issue even after the firmware and OS update.
:(
 
What is the shutoff issue?

About every 5th time I try to shut down, the top menu bar disappears and it says Finder won't quit.

I can restart Finder but it just says the same thing.

I am forced to shut down by holding down the power button.

I have seen a bunch of posts about others with this issue but never a solution.
 
About every 5th time I try to shut down, the top menu bar disappears and it says Finder won't quit.

I can restart Finder but it just says the same thing.

I am forced to shut down by holding down the power button.

I have seen a bunch of posts about others with this issue but never a solution.

Have you done a clean install of Mac OS X + Combo update of 10.5.6 + Software updates with *NO* addon's, tweakers, modifiers etc?
 
I just did a repair of the permissions in the disk util.
Not sure I want to reload from scratch but if I have to.
 
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