This year didn't hurt as bad as 2004 when I sat in the Ralph and wanted to ralph - that Steelers game was devastating. I really thought they had a charmed postseason ahead of them.
This year hasn't been a big disappointment. I didn't think the defense would be as great as predicted - they had good stats last year but seemed to be unable to close out games and come up big when needed. That only got worse this year. I didn't have high expectations for the offense. It didn't seem like they had put enough emphasis on improving the O-line starters and depth. QB exceeded expectations, and the offense was pretty fun to watch most of the year.
Every year it gets easier to take the inevitable fade in November and December. You get a feel for what's going down after all these seasons, and it was pretty clear early on they just didn't have it this year, starting with the face plant against the Patriots in Game 2.