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Q: Eigen values in Mathematica 2.2


Why Mathematica 2.2 can't find Eigen values for some matrices? When I use
the earlier version ( 2.1 ) there is no problem like that. For example:
   Amat={{1,2},{-2,-3}};
   Eigenvalues[Amat]
And version 2.2 displays message: can't find all roots of charactristic
polynomial, but v.2.1 answers: {-1,-1}
This no matters when I want to find only Eigen values, because I can find
it solving characteristic polynomial for instance, but Mathematica use 
Eigenvalues function in JordanDecomposition which I often use.
					wojtek at amedec.amg.gda.pl


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