If they're waving, wave back, they seem to like that!
Seriously, it sounds like you need a power supply with better voltage control. My best stability comes with the 12v line between 11.9v and 12.3v, 11.8v is OK, anything under 13v shouldn't overheat anything.
<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>