Yes, we got cards out about a month too late. We were so on the ball at first. We went to Sears Portrait Studio, let them talk us into getting their cards instead of making our own... and then it started to slowly and subtly fall apart.
First, it took us at least a week after the date we could have picked up the cards before we actually picked up the cards. Sadly, we were at the mall at least twice before that... we just forgot.
The "the snow" happened. I'm sure everyone knows what I mean by that, but just to make the point again, we had snow on the ground for something like 2 and a half weeks. That delayed packages, it rescheduled a play that we were going to see (Wizard of Oz at the Children's Theater, very good, by the way) and it screwed with our sense of time. (Our kids were out of school for three weeks instead of two and, for that first week were bouncing off the walls... we realized a week too late that the day care center was, in fact, open. We just assumed they would be closed when the school district was closed. Oops.) Dawn and I both worked a bit more over the holidays than we might have otherwise, because of the weather and needing to have someone in the office. I worked overnight twice, which really messes with your internal clock.
We actually got the cards home a few days before Christmas, if I remember correctly. Then they got lost in the paper trap that we call a desk. They remained there, forgotten, until the first week of January. When we decided to take a look at the list of people to send to, it only took an extra hour of looking before I found the cards again and less than two hours after that we had them all addressed, stuffed and stamped. Whew!
Then they sat in the car for two weeks...