And sometimes, you have to let the damn thing sit for 15 or so minutes before she'll start back up again.
My Efika showed (show?) this kind of behaviour. I never figured out what exactly lead to refusing to boot. Was quite annoying. I guess it was a thermal issue (it is the Efika with an integrated tft and quite more, so there was some heat dissipation, read my experiece here:
http://via.i-networx.de/eframe/eframe.htm ). But recently I dd a lot of changes including a new (pico) psu and a new entire housing. Since then the device works rock solid (uptimes of days). Only downside is that the audio output still is not acceptable (I hear every gfx and hdd operation in the audo output). But I fear there is something defective in the analoge filter of my Efika. I tinkered a lot around with it, so I wouldn't be too surprised about a little damage.