I have a theory here. You guess it! Yes, Sun Spots. This thread is related to an ealier thread 'Fail Fail Fail Sky+' http://www.avforums.com/forums/showthread.php?t=178671 or similar thread like 'wipeout'. Thought I should start a new thread for everone in this forum to hear this ridiculous theory. Check out this website for some information. There are a couple around but I thought this may be a good one for general but not too technical illustrative purposes. I am not a sunspots guy so may not have too much details or technicality on this subject. http://www.dxlc.com/solar/ Sunspots have been known to badly affect communication, satellite and electrical systems and satellite transmissions. Mobile networks, planes, tvs, etc. Electrical devices must have good EMI/RFI shielding. On a chart on the website, sunspots activity was very high in Nov 2004. I am not saying that sunspots 'is' an excuse for electrical faults like recording failure. But no discredit to Sky+, but one question is how well the Sky+ box is shielded for such electrical interference. Does anyone know? Is the HDD shielded? How about the box itself? If however, electrical interference could be the issue then Sky+ boxes must be amply gounded to defend against EMI/RFI. This can only be good for us customers. If sunspots is the cause for EPG firmware failure (meaning the download stream is corrupted), then I suppose some debugging or error correction algorithm should be used for checking the integrity of the downloaded firmware or at least what's in the box should have pointed it out. I am thinking myself out loud here. Honestly, before Sky+ puts out a box, then logically it must have ensured that the operating system is robust enough to self-repair or do a kind of self-diagnostic testing to report and fix failures. If this is the case, then logically if the Sky+ box is properly shielded and has effective error correction algorithms for firmware and EPG downloads (not just the EPG firmware updates but the actual EPG datastream), then the problem has to be elsewhere. So concluding, I think the probable areas of recording falilures are: 1. poor electical shielding of the box, susceptible to sunspot activities 2. no error correction on EPG data download streams (which explains the regularity of the recording faliures every few days) 3. HDD falilure or incorrectly reported/catalogued bad sectors. 4. HDD came from a bad production lot (actually if recording failed before, then why didn't the HDD fail entirely? So bad HDD sectors is the likely cause. But then isn't the Planner Re-builder supposed to be recording down bad sectors and do housekeeping???) 5. built-in self-destruct algorithms ??? This thread could open up a can of worms or a can of candies.