TProfile2D NaN

Hi,

I have problems with a TProfile2D.
I Fill it with proper values and weights (check that none of them is NaN) but the result histogram has NaN values in some bins. It is possible that the sum of square of all weights I give can be quite large (a bin can receive a lot of entries), I am ready to rescale all the weight if this is the reason.

root version 4.03/02 linux 2.6.7

-- 
Nicolas Produit
INTEGRAL Science Data Center    Phone:  +41 22 379 2140
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