Hey,
What has happened this Christmas was the biggest online ordering boom in the internet history, that's why a couple of our US clients haven't received their item until now. While normal delivery time outside the holiday season lowered very reasonably during the last two years (typically a few days), from the last days of November it has worsened dramatically. But it is a realistic hope to really have everybody's package arrived this week. Just ask for more info at the nearest post office, they will sure have something.
And yes, for some reason USPS never share tracking info with the Hungarian partner, don't ask me why. The rest of the world is trackable for us, even such exotic and now chaotic places like Venezuela.