I didn't mean to question your knowledge, everything I learned about the things was from that article (although I should know a bit about how they work from the university course I started) so it's nice to be corrected. So will all capacitors eventually pop/vent?

 

I did buy the Hipster PSU (exppecting it to be good quality) just before I moved into my house so it could be that my house has vast quantities of dust which are not friendly for PSUs.

 

I want my.computer back so I can play Skyrim :(

"I didn't mean to question your knowledge..."

I didn't even take it in that context.  So no need for clarification.  But, as you can probably tell, I've been at this awhile.  I just didn't want you to assume the Wikipedia article should be taken at face value, no questions asked.  (And in all fairness, I've periodically had my own share of brainfarts ;-)

"So will all capacitors eventually pop/vent?"

That should be "all [electrolytic] capacitors...".  No, not necessarily.  But at some point they will cease to function as the electrolyte becomes inert.  Think of an electrolytic capacitor as a specialized battery.  Their respective chemistries are not dissimilar.

For a non-defective part the main instigator of excessive out-gassing is heat.  It doesn't much matter if it's externally or internally generated.  If the ESR is too high, besides limiting the available surge capability, you will experience excessive internal heating, which is often the cause of premature failure.

"I did buy the Hipster PSU (exppecting it to be good quality) just before I moved into my house so it could be that my house has vast quantities of dust which are not friendly for PSUs".

While the excess dust may have been a contributor (and a good reason to consider a case with a removable, washable air filter) the THG review you cite should have served as your caveat emptor notice. :-)