Question re: Nearly Headless Nick

[catherine at cator-manor.demon.co.uk]

No: HPFGUIDX 17954

I have searched the archives for an answer to this, and can't find 
one, but I can't believe it hasn't been mentioned before, so 
apologies if I've just missed it.

In CoS, is Nearly Headless Nick revived?  I can't see how he could 
be, because he wouldn't be able to take the mandrake potion.  I've 
also realised that I can't find a reference to him in any either PoA 
or GoF.  Does this mean that he is still petrified?

Has JKR deliberately ignored solving this particular problem, as she 
doesn't know how to?  In which case, why didn't she not have him see 
the Basilisk in the first place?  He could have been facing Justin 
Fitch-Fletchley and not the Basilisk, and JFF would still be 
petrified and not dead.

Or is it just a Flint?

If someone could point me in the right direction, I would be 
grateful.  I know it is off-topic, but I have been wondering about it 
for a while.

Catherine