It appears Camera Raw didn't install in CS5 Bridge as all ACR functions in bridge are greyed out. I've been on hold for Adobe Support for over 2.5 hours over two days and after trying to use their "we'll call you back feature" which just rang for 18 minutes, I've given up on them. Does anyone have any suggestions. Camera Raw works fine from inside Photoshop but won't display any thumbnails inside Bridge.
I suspect you're frustrated, but in order to help forum members are going to need more info about your system, other Adobe products installed, etc.
Is it installed under the Common files plug-ins folder, as opposed to the Photoshop plug-ins folder?