I've got two that have been modded. They run for about a week then I lose a board. I turn it off and then on and it comes back for about a week. If you're hosting them at home and keep an eye on them, then it's not much of a problem. This happens only to the modded ones though.
in the hacking thread i posted a small script that automates this.
for the LN just change the min speed from 290000 to 190000 or so.