John, I've had some problems with my 5000.
Sometimes the front display flickers. Whenever it flickers, the receiver poorly recognizes commands from the remote (i.e. I have to press a remote button several times before the receiver will do the command). I can fix the problem by turning the power off and then back on.
Also, last week, I was adding a satellite and all of a sudden the receiver lost all its memory. It wouldn't let me re-enter the satellites until I did a "factory reset".
So, your Coolsat is not the only one that has had problems.