Jukebox crashes when breaking with no record inside

I was playing around with jukeboxes on 1.4.4, and my game crashed. I put a music disc in one jukebox, to build with the sound on, and then destroyed a jukebox about 2 blocks away from it. I popped the music disc out of the one in use and my game crashed. Has happened twice. Crash logs attached. Reproducible? Also, my world isn't corrupted. (I used the same world both times it crashed.) !!!!!EDIT!!!!! I think this happened because Minecraft lost too much memory trying to allocate me destroying music boxes wit discs in them. I recreated, and first thing I did was put music discs in over 5 jukeboxes. Then, I destroyed 3 in a row and on the third the disc item glitched it's place and I crashed.