I was doing some mining with lights off. I could see well in dark. However, something got screwed up. It was like fucking hell. Good thing that game didn't crashed or deleted some files required for game. After some time it seems stable, but results are horrible... I almost thought Herobrine will come behind me during corruption (but... he doesn't exist still :P). And additionally, sorry about this giant amount of panic talk. It seems it's just GPU issue. Not big problem.
Server where this happened is VeoPress Mine Server - http://veopress.com . Only I had this issue, nobody else.
NOTE: THIS IS NOT ACTUAL CORRUPTION AS IT WAS. Video Codecs went too buggy and it caused this damage. I'll try to fix this corruption, but it will be 1,8 GB file, not sure am I able to upload it, would take.... 2 days of non-stop upload.
Don't believe? Here're some screenshots which have not been damaged.
(This video was posted by TomKTW. The text on this page was in the description.)