Ye something similar has happened to me, 3 times in the last 6 or so hours I've lost all my tools, weapons and backpack and the first time I had every tool in the game, a coyote backpack, a G17 and a M4A1 CCO SD. That made me very sad but I kept going on and the last time I had a MP5SD and a new coyote backpack and logged out close to the NW airfield and when I logged back in on a different server I was in a Kamenka and again lost my weapon, tools and backpack. I did not have any chains at the any of the three times.
