Walls, which were created manually and some original from map, which intersected with other objects, fall down on dedicated server, when player dies near.
This problem in feedback link
https://dl.dropboxusercontent.com/u/16056439/2013-04-29_00001.jpg (507 kB)
https://dl.dropboxusercontent.com/u/16056439/2013-04-29_00002.jpg (298 kB)
https://dl.dropboxusercontent.com/u/16056439/2013-04-29_00003.jpg (348 kB)