@davewill:You are most likely correct. When I found out that SQL 2012 didn't work on XP I went and read the notes on 2008 R2 SP1. I haven't deployed it yet to my 5 xp customers that are using our .net 4.0 application. There is nothing in the notes about XP so I assumed they had dropped support there also. I guess I read to much into it. Windows 7 isn't in those notes either but it is supported. I will edit my original statement.