Hmm, well if I right click = edit name it shows the full name as it was correctly. I can alter the name, then when I press enter it goes back to the single char. Odd eh!
Anyway I restored a copy of the project from last night and the error has gone.
I have been having an issue with lightmapping not working, which may have stemmed from some error a few saves back.
Unfortunately I can't tell you much about how to reproduce the error.
I have a PC win7, hex core, 12GB, Quadro 1800, Unity 3.4.0f5, PM 1.2.1 (24779)