actually for me (maybe because i've been here so little) things that are not a problem are:
* saying HELLO.. only when i had a bad day i react in a rude way.. not that often though..
* taking pics (maybe because i am not handsome or cool, so no one has ever done that before to me!!)
* i got used to the laowai.. and sometimes i reply with a "lao-zhong" to them, especially if kids

the yelling a tthe phone and the spitting with the preparation sound (that is the worse!) are a little annoying..
the shop basket staring.. ohhh i hate that!!!
:-)