Concerned, me no, for my phone her at the office yes. I already have plans to reroute all phone calls to my extension elsewhere. We have recently (last week) finished up expanding all of our (ok most of them) apps to 4 digit years. I really can't determine if I am concerned or not I guess I'll just try to take it as it comes on the 3rd when I get to work. My biggest concern is where a bomb may be dropped as the year changes though.