[antlr-interest] alternatives to linq LambdaExpression Compile method

[Costa Basil]

I have a program that has to compile and execute formulas on the fly. I am using 
antlr to build linq expression trees which I then compile using the 
LambdaExpression.Compile() method.

The problem is that this method is far too slow. Are there any other 
alternatives perhaps commercial that would be faster?

Any other suggestions?

Thanks