No not seen that, looking through it now.
Read a number of reviews, posts on POTN and FredMiranda.
The IQ, bokeh and spec (F/2.8 IS) in general are whats attracting me. Also I dont see me moving to a FF camera soon. My next upgrade is likely to be the Canon 50D next year. If I get one of those, in addition to this EF-S 17-55 and my EF-S 10-22mm, I think Ill have all I need. Dont really do much long range stuff. I suppose I could always pick up a 70-200 F/2.8L in a couple of years if I nee it
Was concerned about the chromatic aberation from 17-35mm, although this seems to be the only sacrifice - can be fixed in Photoshop anyways.
The range is a bit of a let down, but I suppose in 35mm terms itll do the job.