BTW, I found a quirk in the way my devices boot up vs how well the remote works:
I have noticed when everything powers up out of the Harmony sequence (basically, I have to turn on the PS3 slim first, then let the Harmony turn on the TV and the receiver), the remote functionality is erratic. When I go left or right, the cursor goes all the way to the left or right (doesn't stop with just one button press... it just keeps on going left or right). It took me a little bit to figure out that if the PS3 is powered on after everything else, this happens (like when I activate the activity, leave the remote on the coffee table, then go and turn on the PS3).
Anyone else notice this? My setup: PS3 slim to Marantz SR6003 via HDMI (video and audio LPCM); Regza to SR6003 via HDMI.
At least I know now how to deal with it.