I think I saw a similar post yesterday about burning software hanging. Did you give up on the default software included with the distro and install K3b? K3b works, Brasero doesn't. Don't take my word as the truth, test it for yourself.
i5 3570k, ASRock z77 Extreme 4, 8 Gb Ripjaws 1600, Antec 430w psu, HVR 1600 tv tuner, custom case- marble top, oak face. Carver & DCM Time Window sound system. Mint 14 KDE.