this is our second ipronto so im not sure if this is true or not but...

ive noticed that if you do hold the remote (to be learned) too close or too far from the ipronto ir eye, the signal blasts is too powerful or is too low. to test this theory, put the ipronto remote real close to the dvd ir receiver and try it.

also if flourescent lights are in the room, this also may affect the ir receiver.