Still occurs in 1.4.7 and not JUST in naturally generated sources. I leveled a mountain top and placed my glowstone in the ground every 7 blocks, and whole large sections of it have light level 0 when I log in or go away from them for a little while. After getting close for 2 seconds of so they light up, but not usually before something spawned in. Can post some screens of it if needed.
Neil Verbeck
Still occurs in 1.4.7 and not JUST in naturally generated sources. I leveled a mountain top and placed my glowstone in the ground every 7 blocks, and whole large sections of it have light level 0 when I log in or go away from them for a little while. After getting close for 2 seconds of so they light up, but not usually before something spawned in. Can post some screens of it if needed.
PS.
Vanilla minecraft.