Receiver very slow to respond to remote - DirecTV

Lately my HR24 receiver is very very slow to respond to channel change or menu commands from the remote. It is intermittent but happening more and more lately. When I hit the menu or previous channel button the screen will go blank (black) and it will take 20 seconds to a minute before the picture returns.

Volume and other functions on the remote work great and batteries are new.

Is this a sign the receiver is going out? Any other possible solutions.

This question, "Receiver very slow to respond to remote," is about DirecTV channels, programming, equipment, and sports.