Summary: maybe i've got some bad karma floating around, who knows. i got my FIRST f-2 around christmas time. the first day i used it, the left shoulder strap snapped off the base of the bag. [...] i finally got a second one. well, this time it lasted about 4 weeks. after cautiously putting it on one day, SNAP. number two down. this is a [$]back folks, what's the deal?