I wonder if this procedure also grants you 30 extra days of Netflix :)
I just watched full screen content and used the zoom feature when I watched something on comedy central which was the offending logo for me. After a couple days it went away. I still question whether this is IR or this is a result of the bright logos aging those pixels faster in the early weeks of the TV's life. Whatever the case avoiding displaying the logos in the same position and watching stuff that makes random use of those areas of the screen should sort you out after a couple days. Good luck
"Panasonic decided not to give us any IP control of power up."
Actually if you turn on "Wake on LAN" under Network then use a program like
'WakeOnLanGui' you can have the tv switch on by sending it a signal from a PC.
I figure there are probably other software programs out there that could be set
up with timers to send the switch on signal at times of your choosing.
As for a 20 minute screen wipe the PC that powers on the tv could be set to
push a 20 minute wipe style video over DLNA to the tv one minute after the
turn on signal.
I am tempted to try to set this up myself just to see if I could get it to work :)