KD-65X8509C bought within the last week

I have the TV's IR Blaster setup to control a BSkyB Sky+HD box, and most controls work great.  However, the UP/DOWN/LEFT/RIGHT navigation buttons work, but always sends 3 occurrences of UP, DOWN, LEFT, or RIGHT instead of just one occurrence.

So, for example, when navigating the Sky+HD box list of recordings, pressing down skips down 3 recordings, making it impossible to select the recordings in-between.

Is there some way to update the IR blaster database to correctly only send 1 occurrence of LEFT, RIGHT, UP, or DOWN when that button is pressed?  Or is there any other solution to this problem, that will make the UP/DOWN/LEFT/RIGHT buttons behave correctly?