The misnumbered/not numbered houses is still a big issue. GPS can only be relied on to get you in the general area, and even then sometimes it points you to the middle of a field.
My real gripe is apartments. People will often fail to give you the apartment number and even if they do, every single complex has their own numbering system and layout. There is one complex near here where the signs on the buildings are completely illegible at night due to the lights above them casting shadows. I hate having to go there.