On Thu, 13 Oct 2011 09:03:39 -0700 (PDT), "William R. Walsh"
put finger to keyboard and composed:

But I would think that adding a bit of series
resistance to the input side and letting some of the waste
heat go away there would go a long way towards extending the
life of the regulator package.

I had not thought of this and might just sit down and do the math to
see what I'd need. What I do will depend upon whether or not there is
room to put something in place without going to extremes.

I agree that's the simplest solution. In fact I've done similar things
in lots of gear, including a 586 motherboard.

- Franc Zabkar
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