HR20 problem - can't change channels!

[atdbuzr]

Hi all,

I'm having a strange problem with my HR20. Occasionally, all of a sudden, I can no longer control my HR20 box. I can only bring up the guide and menu and exit the guide and menu. None of the other controls work (both through the remote and on the box itself). I have to do a reset before it starts working again. This is begining to happen more and more often (a couple times a day). Anyone else seen this problem?

thanks.