Why I don't belive in the PSU being the problem in SheevaPlugs

Two dead powersupplies of SheevaPlugs; it’s always the same capacitor which dies. (On the right, it spillt the electrolyte into the PSU, on the left it “only” started to break free …)

There is some discussion going on regarding dead SheevaPlug-PSUs, reworked PSUs for the new GuruPlug and why Sheevas and Gurus are dying more and more frequently the older (talking about weeks here) they get.
Personally, I own two SheevaPlugs, one purchased by mid-December 2009, the other one was delivered around January 2010. Well, both PSUs already died, in both it’s the same capacitor in the PSU that shows visual anomalies. And because of what I’ve seen after opening the PSUs, I personally don’t expect a replacement PSU to last much longer than 3 to 6 months each :(
From what can be learned from the issues of the GuuPlug, it’s not the PSU which heats up the box but the CPU; therefore I suspect, as SheevaPlug is built in some way similar to GuruPlug, that it’s the CPU which is literally frying the components of the PSU — until they finally give up and die. Thus, a replacement PSU would be boiled as well — and at least according to German law, 6 months after purchase it’s the customer who has to bring prove that a defect was there at the time of purchase to claim replacements free of charge …

Powering that SheevaPlug via a switched PSU for harddrives until – in about four weeks! – there might be a replacement PSU.

So, what to do? The most sensible thing to do right now, in my opinion, would be to address the (European) seller asking for a full refund both on SheevaPlugs as well as GuruPlugs, as they are proven to be unfit for the duty intended; they might not last longer that 3-6 months until burnung out — which was not advertized back then …
If you actually use them, your situation might be different; in that case, I’d request a preload of PSU replacements for the usual time electronic devices work/ran/stay usable, based on my experience I’ll need a new PSU every 3rd to 4th month, i. e. four per year. Thinking about using the SheevaPlugs for 4 to 5 years, I’d need a supply of 16 to 20 in total per Sheeva … And maybe I’d still lrequest a partial refund due to the lack of usability during each PSU failure and the time I need to spend replacing PSUs myself …
To be honest: I strongly assume that, if checked before Marketing started, they wouldn’t be allowed to be distributed within th EU at all, with all that heat and the heated PSU becoming a risk of fire …