Install stuck I think. Get ".ok" upper left screen

[post-meridian]

I'm about 30 minutes into installing xbian and things seem to be just sitting there. I don't want to power down in case it's just taking a long time. I booted with the install SD card, it went through some sort of download and updating, and then rebooted. I got a large red "R" center screen with ".ok" in the upper left corner. I stepped away for a moment and when I returned the screen was blank. I hit the enter key on the keyboard and the ".ok" reappeared but nothing else. I can see the network activity LED flashing so possibly it's still doing something.

I figured it would be best to ask before powering off and trying to start over. Any advice at this point? I'm using a 4Gb SD disk which has worked in the past. The network and Raspberry Pi have worked with other OSes like Raspbian, RISCOS and Plan 9.