Topic: Occasional lock-ups

I am getting a lock-up on my chumby once a day or every other day.
I simply turn it off, using the button on the back, and back on and everything works again for a day or 2.

Any ideas?
I am running a simple set of widgets for now (I will be doing more with it when I have time), no USB drive plugged in.
Weather.com (3 instances in different zip codes)
Spike babealizer
Digital clock
Daily Horoscope