The founder of LayerVault is claiming it was specific illustrations which were stolen
https://twitter.com/Allan/status/309346292902014976 https://twitter.com/Allan/status/309350351054716929
https://twitter.com/Allan/status/309346292902014976 https://twitter.com/Allan/status/309350351054716929
Those tweets sound like classic whining in face of collective pitchfork stabbing.
http://news.ycombinator.com/item?id=5332635
To my eyes, it does not look like 'blatant copying.' The icons look similar, but so do many others. If LV's evidence comes down to "looks too similar, but isn't actually a copy," then the DMCA is not the avenue for pursuing this.