17track? If so, that's normal. It's what they use. USPS tracking will pick it up and take it from the point where it clears Customs.
I don't dig 17track.net either, for what it's worth. The long wait is real.
That's odd, certainly not my experiences. Everything goes through 17track until it crosses the water, hits SF or LA, and USPS tracking picks it up from there til it gets delivered. Sorry you're having troubles, though. So maybe not so common after all.