Gears mashed up

Hey guys, i had the rearend blow up in my silverado and have heard before that this is a common problem. With some of the other comments others were making about changing gear oil ect i thought i would start a poll and would appreciate your info if you have had the same thing happen to you. The poll is over in the silverado forum and can be located here (http://www.automotiveforums.com/vbulletin/showthread.php?t=466568) . Thanks in advance.