hmm, thanks for the response Torezu, the server is using the tekkit download, i've added catacombs plugin, worldedit/guard and lagmeter. I can't speak for the others except for one user who said that his klein disappeared (I think i spelt that right). Myself however, I was using the ring that lets you fly (I can't remember the name), I now have nothing in my inv that could be considered fuel but I can still use the ring though.