I think there's something else going on at times as well because I don't use any graphics on the 950 and have had this problem, as well as other issues where if I rename one of my "devices" it would actually change the name of a completely different button, usuall it was changing the actual "LISTEN" label at the top of screen. Example: in his screenshot above, I would be trying to change the name "PLSMA" but it would instead be changing where it says "WATCH". And sometimes it wouldn't let me move a device to a different button, I'd go into the button/LCD editor and try and drag a device to a different button but it just won't move it.

I originally had all these issues with a few mx900 remotes so there's something screwy going on at times. I had emailed a mx900 config that had these problems to tech support a little while ago but never heard back from them.