I never visited the Atlanta Bread Company on Lake Murray Boulevard, though I did do a closing on the one at Sandhill and do visit the one on Sunset every once in a while. In general, I consider ABC a step down from Panera but perfectly acceptable (though both chains skimp on the AC outlets..)
The first thing I would say about this ABC is that it's a very attractive building, especially in the evening sun.
The second thing is that I don't believe I have ever seen a closing note as extraordinary as the one taped to the door here. In its own bland and elliptical way, it's pretty devastating, especially considering the source!
UPDATE 26 September 2011: I'm marking this one as "open again" based on commenter julie's report. Presumably all the problems the first iteration had have been worked out.
UPDATE 30 September 2011 -- COmmenter Andrew sends this picture of the We Are Back sign: