I can not guarantee this will work for you or for how long but it worked for me and still does. The only way to fix this permanently would be for DICE to release a patch which they won't do for a while yet.
UPDATE: My game started to spawn me with no guns AGAIN and when I checked my disc there were 2 very light laser burns (aka ring around the disc) so took the game down to Blockbuster who cleaned it for me which removed the laser burns slightly, I then installed the game to my hard drive and the game works 100% fine now. I recommend you installing the game to your hard drive if you can.
