crwdns2934241:0crwdne2934241:0 rab777hp

crwdns2934249:0crwdne2934249:0:

From what I've heard, error -23 has to do with the logic board, but if you have no other symptoms that's strange.
You may want to check out [http://www.ifixit.com/Answers/View/8022/Software%3A+Firmware+Upgarde+Issue%3A+Will+not+upgrade+to+3.1.2+From+3.0|this thread], it seems the poster there has the same or similar problem.

crwdns2915684:0crwdne2915684:0:

open