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-Testing Preview 4 is ok with me. In Front Row as soon as I choose it form the Applications menu it just doesn't work. after that I couldn't get the Remote buddy menu again on screen so I had to Quit and Open again! It toke me 2 days to discover that the Remote Buddy menu appears again only if I keep pressing the menu button continuously for 1-2 seconds. But still doesn't run.
-The Finders modified icon I think is placed with the other modified icons as a *.plist file inside my Home> Library> Preferences folder. But my /System/..Core Service Finder icon is still the original blue (and I don't intend to change it!). The rest modified icons are displaced perfectly with Remote Buddy. (tested on an G5 iMac isight, with CandyBar application for the icons modification).
-It would be perfect if the Force Quit appeared after a failure of Quit.. (Maybe with using something like a countdown timer for time that an application makes in order to quit, and if the application exists this time the force quit option could then be displayed.) I really don't know much on programming, so I don't really know how possible or applicable is that. I just believe that Force Quit for a remote relating application is a bit overreacting although it could be useful in some occasions. (No offense what so ever Mr. Felix!)
-I hope everything turns out to be perfect in the next preview.
I totally recommend Remote Buddy for every remote bundled Mac.
Kost.