<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:10pt">I recently did a fresh install of Mythbuntu 12.04 64-bit. The first time I ran the system updates they failed part-way through and left the system in an inconsistent state. After a hard-disk surface scan and a memory test to rule out those underlying hardware issues, I've since wiped, re-installed and done the updates (including MythTV 0.25) and the system's working fine.<br><br>It could be that your failed power supply did some damage to your hardware so it'd be worth doing a memory test and hard-disk scan to check that out (see the "faulty RAM" and "Failing disk" sections at <a href="https://help.ubuntu.com/community/FaultyHardware">https://help.ubuntu.com/community/FaultyHardware</a> ). Also, given <span style="font-style: italic;">"two completely different 64-bit systems",</span> be sure you've verified the integrity of your
downloaded install image (check the md5sum of the downloaded file and the CD you burnt - see <a href="https://help.ubuntu.com/community/HowToMD5SUM">https://help.ubuntu.com/community/HowToMD5SUM</a> ) before doing a fresh install.<br><br>That should at least help to eliminate some of the possible background causes of some errors.<br><br>Nick<br><br><br><a href="https://help.ubuntu.com/community/FaultyHardware"></a></div></body></html>