3048,3 what to do?

I just bought 360 for next  year and am sort of thinking it over I have started to get this every 2 weeks or so.  I do the reboot run live update.  Next time could be that day or next event I download the eraser and the file mentioned for vista home premium  (ha what a laugh there), and I do the little fixer thing you have. 

Tell us is this a glitch nothing to worry about but aggravation, that we are safe or tell us if we are not.  Is there another program you could suggest that we could run with our 360 to help us catch things that could be messing with our computer?