I have been noticing a lighting glitch when you have a huge closed off area about 94x149x15 blocks hollow inside.

what I expected was every thing to be dark inside.

However when I went inside the structure I was getting a lighting issue. Also when you move around the lighting issue would spread to every thing inside the structure. The two screen shots show the lighting issue during the day and at night.

steps to reproduce:
1. make a hollowed, closed off structure that is about 94 blocks wide, 149 blocks long, and about 15 blocks high.
2. go inside the structure and seal your self inside.
3. close the game, then relaunch the game.
4. you will see (hopefully) the lighting bug.

if you want my level.dat file of the world that has the bug tell me were to send the file.