If you use Photoshop CS and own one of the following cameras, be sure to download the new Camera Raw 2.4 Update even if Photoshop is currently able to open your raw files (you’re most likely working with the beta version):
Canon
EOS 20D
PowerShot S70
PoerShot G6
EOS-1Ds Mark II
Konica Minolta
Maxum 7D
Dynax 7D
DiMage A200