When trying to open a .NEF file in PhotoShop CS, instead of the Camera Raw Plugin starting, some bogus tiny little dialog box with an exposure adjustment slider displayed. Yesterday I installed the NC 3.53 update. It seems this update replaced the default handler for .NEF files.

The solution was to (after closing PhotoShop CS) rename the following file:
C:/Program Files/Adobe/PhotoShop CS/Plug-Ins/Adobe Photoshop Only/File Formats/Nikon NEF Plugin.8Bi - I just put an 'x' at the end of the file extension (or delete the file). Started up CS and opened a .NEF and back came the Adobe Camera Raw plugin.

Anyone else have this problem?