Hmm... This shows up in all 4 systems regularily? I would contact tech support as this is usually a faulty module, chassis, or mainboard, although the module is the most likely cause if I recall. I seem to remember a site that had a couple DEI's filled with modules and a bad digital station module was the cause, replaced the module and the problem went away, but it was pretty easy to troubleshoot as the alarm code said what board number it was.
