Yea, they fixed that glitch in the April 23rd update patch. No longer doable.
Right now I'm at 14/7/2.
You know I really hate? Teammates that are being assholes. Check this out. I join a game on Dead Air on Advance, I get hurt badly because my teammates don't save me from the smoker long enough. I go back for a pipe bomb and try to heal. This player "Rayne ofh" or something like that keeps shooting me every time I'm almost healed up, then kills me. Least to say, I figure they doing it for kicks, and generally being that of a nice-hearted guy, I play with these guys for another level or two. The next round of being a dick came when we reached the third level and my teammates just start tking each other. Ragequit after that. Oh, did I forget to mention that that Rayne person kept calling me a frenchie? That really pissed me off.