To bad. The hopefull statement about release F "...This release also includes improved video output on multi-screen setups running Mac OS X..." would actually improve the playback on my TV (2nd screen) when hitting cmd-F when the video device was set on '2' in the OSXinterface the VLC prefs. Still (as in release D) cmd-F will start fullscreen on the iMac monitor instead of the 2nd external monitor (TV).
Thereafter I have deleted the prefs using the accompanying Applescript, and restarted VLC. After resetting the fullscreendevice to '2' again, the result was a dissapointing fullscreen on the main monitor instead of the second one, the TV.
For now, I've given up hope and switch back to the working release D (which surpisingly still functions perfectly, even after deleting the prefs and resetting them in release F).
If anybody has any suggestions, I'm more than happy to read (and implement) them to get the newer releases working properly.