Yes, the season started slow for me as well (even the corporates that usually come in January are unfortunately coming in slower) but I'm starting to see a pick up in interest. I assume I'll have a lot of phone calls starting Monday. 1099s have been coming out later, although I don't think it's so much the post office being slow as the income payors being slow in sending them out.
Anecdotally, W-2s seem to be going out slower than normal as well, given the changes in reporting. I'm glad I don't work for ADP, that's for sure.