Problem is it seems like the EDID is not malformed or having read problems, it's just not offering 1440x900. But it's possible I'm misunderstanding and that EDID is coming from another monitor on the system (is this a desktop or notebook).
Wo0zy's right: the old days when it was dangerous to send flawed timings to your monitor are long gone. You should be able to steal some 1440x900 timings from someone's modeline out there, enter them into DTD Calculator's left hand side, and let it convert them to a usable DTD for you. At worst, you'll get the "Out of Sync" message from your monitor and have to revert back to the old settings.
I do not speak officially in any sense for
Intel Corp., Technology Manufacturing Group
but I do work there.