DAO Token Holders, If Mist gives you problems us myetherwallet.com
The Ethereum blockchain is huge, like over 28gb and even if you since, you have to have updated to latest client 0.8.1.1 in order to process your refund. Slacknation's instructions where long and numbers had to be entered correctly.
Using https://www.myetherwallet.com/#the-dao simple select the keystore wallet file, enter a password if it was encrypted and hit the big red button. The DAO tokens will be burnt and Ether will be credited to that wallet address.
Easy as pie.