Thank you wow GM.
When I transferred to Icecrown, someone had the name Chasey! It was a level 11 human paladin and the account was "not found". I put in a ticket and the GM came back and said that they couldn't do the change.
Three months later I check the name again and the name Chasey on Icecrown was not found. I tryed to make a toon with the name and it said "name already in use".
I put in another ticket and the GM told me, due to the integrity of accounts they wouldn't ask the player to change the name, yada yada yada. I responded back with you can't even find the name on armory.
So as I logged on today, the message I got was, Change the name as soon as you can.