egausch - During my time as a basketball official, I've discovered two things:
The block/charge is the call I struggle with the most. Some times on a bang bang play, a younger official (like myself!) can have a hard time sorting this one out. I've noticed that the top notch officials in my area hardly ever receive greif when they make a tough block / charge call.
Issue two is that younger officials also tend to have a hard time deciphering what is and is not a travel. I'd made it a point to study this rule in it's entirety before the season, and I now feel I get it right 9.5 times out of 10.
And like Bart said, at this level, well, you're not getting tournament-tested quality officials, but they're working their hardest, I'm sure.