DD doesn't "cry" much, but she can be fussy. She typically fusses when she's hungry or tired or right after she wakes up and I'm changing her diaper. She only really cries when fussing hasn't gotten her what she wanted (when mommy and daddy don't realize what the heck she was fussing about). She probably throws a crying fit like once every two days or so.
Re: 10 week olds/ crying
Ditto. Mine cries ALL THE TIME, but she's also drooling nonstop and chewing on everything, so I'm sure she's starting teething.