1.7b3 doesn't detect highest resolution on Dell 2407WFP

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Problem Description: Dell 2407WFP connected via DVI can only detect upto 1680x1050.

Setup:
OSX Lion 10.7.1
Driver: 1.7b3
HW: MBP 15 Corei5

The interesting thing is my LG W2753VC-PF can detect 1920x1080 (again via DVI)

OSX doesn't have problems detecting Dell 2407WFP when directly connected (it shows upto 1920x1200) either via VGA or DVI.

Attached is the output of the debugging tool.

At least I'm happy to report that 10.7.1 is working OK for me with 1.7b3 with my LG monitor.