XBMC won't wake up

Hi everyone,

I have XBMC running as a user session under Ubuntu on an Acer Aspire Revo. Lately, and I can't think of what has changed, it hasn't been waking up when I turn the TV on. Inputs from the remote or a keyboard do nothing, and I have to reboot it in order to get it to display anything on the screen. I tried dropping out to a command line and using "startx", but that gives me an error. Is there a setting I accidentally turned on? Anyone else experiencing this?

Thanks,

--
Francis

It's been suggested that this might be my Harmony remote sending some kind of "off" command to XBMC when I turn the system off. I'm going to explore this when I get home today.