Ah, explains the non-reproducability here; I thought I'd remembered it, but couldn't get it to happen. (That's what I get for running extras-devel !)

Edit: Oh, BTW, I was kinda looking at fixing the icon issue, too. But I was going to do it more generically; I'm thinking making a script using imagemagick or netpbm to compose the 42 (6x7) images from 14 (6+7+static background) images. Since this requires excessive dependencies (and reduces flexibility), I don't expect you're interested in having it as part of the build process, but it could be useful for artists (and folks like me) creating icon sets. That also makes it easier to fix the bar issue. For that fix, I suppose one could batch process all 42 with imagemagick/netpbm to clear/fill that rectangle; but I'm happier generalizing. If anyone's interested in this, say so, and I might have it today or tomorrow... comments welcome, too.