This posting is older than 6 months and can contain outdated information.
Sorry it took so long to try stuff out.  Here's what happened.
.. Tried setting the resolution manually, as you requested.  No 
change.  Remote Buddy comes up with its window in the middle of the 
screen.  I shut the cover and a few seconds later Remote Buddy moves 
it to the lower left corner of the screen.  When I exited the window 
via the USB remote's menu button, the window went away.  When I 
reentered via the menu button, the Remote Buddy window came back to 
the lower left corner. 
.. Tried deleting the ColorSync profiles for my TV, via System 
Preferences>Display.  Of the 4 I had set up, I could only delete 1. 
The delete button wouldn't enable for the others. 
..  Ran Disk Utility and had it fix permissions up. 
..  I still couldn't delete the ColorSync profiles from Display. 
..  Moved the profiles from /Library/ColorSync/Profiles/Displays to my 
Desktop with sudo. 
..  Tried Remote Buddy, again with the same symptoms. 
..  Played around connecting and disconnecting the HDMI cable and my 
USB remote.  At one point the LCD display appeared to loose sync, and 
I couldn't get control, either from the keyboard or the remote. 
..  Powered down the laptop. 
..  Powered up the laptop with the HDMI cable and the USB remote 
attached.  Closed the cover while the white boot screen was 
displaying.  When everything appeared to be up I pushed the USB 
remote's menu key.  Front Row came up and worked fine (everything in 
the middle of the screen).  Exited Font Row and a few seconds later 
Remote Buddy came up, but this time its window stayed in the middle 
of the screen.
I tried bringing Remote Buddy up and down as well as switching 
displays several times.  Everything seems to work now.
Harry 
At 2:21 PM +0100 2/1/08, Felix wrote:
Remote Buddy should actually automatically adapt to resolution changes.
If you change the resolution manually via System Preferences > Screen 
Settings .. does it adapt after a few seconds (if possible, try twice 
- once with the menu open and once with the menu closed)?
Thanks in advance for any additional info you can provide.
Best regards, 
Felix Schwarz