If you install Opera 9.5 and then run Bridge CS3 and click on either "Bridge Home", "Adobe Stock Photos", "Adobe Photographers Directory", "Version Cue" or "Start Meeting" on Favorites pane, Bridge freezes, consumes all CPU and needs to be force-quitted. No messages on the system console.

The above mentioned favorites all having browser capabilities in common and me knowing that I just upgraded Opera to 9.5, I started digging around and found Opera inside Bridge, and it is version 9.2. If you want to check, then in Finder right-click on Bridge CS3 application, click on Show Package Contents, open Contents/MacOS folder and Opera app is there).

To get around this, either
(1) uninstall Opera 9.5 (or downgrade it to 9.2) and wait for Bridge update with Opera 9.5 inside
or
(2) Leave Opera 9.5 application on your computer but remove ~/Library/Application Support/Opera folder. (You may want to remove ~/LIbrary/Preferences/Opera and ~/Library/Caches/Opera folders as well, but that is not necessary.) Beware though that if you run Opera next time, it will do the "first run" and recreate this folder again.