I'm just going to add my two cents.
Are you sure you really want front suspension for an urban, curb hopping commuter? Front suspension may not really perform well when you are standing to pedal, which you will be if you are maneuveing and hopping curbs and such. Plus I've always thought that in a way suspension tends to make handling inconsistent. Then there's the fact that eventually it will need worked on. I personnaly commute on a rigid MTB becasue I like to goof around, and if I bought a new bike the first thing to go would be the suspension fork.
Also I'd catuion against getting to hung up on the weight issue. I used to think that weight mattered, but now I think that a few pounds doesn't really make that much difference. It's an easy way to try to judge a bike, but it doesn't alway relate to the quality, performance, or enjoyability of a bike.