Once those older systems no longer see daily use and sit for years many die off.You need to review the condo budget and see if there have been pluses or losses the last 5 years and if the board is constantly changing over ( instability ).If it is in a bathroom then without a fan could be surface moisture.

Of course, the outside wall should be the barrier to keep moisture out.  

This just mitigates the risk that a renter will expose the material to too much moisture because they aren't going to be as conscious about it as a homeowner may be. 

I do not know anyone that thinks Dricore is worth the money in our area.To me it seems like it would cause a huge increase in the wicking of water into the sheetrock if there was a leak.Where would the moisture go if you seal off the 1/4 inch gap around the edge with vinyl?

I can tell you that laminate is very susceptible to moisture and liquids in general.

Unless things are different in different parts of the country but I don't think so... if you read the fine print of the warranty of tub reglazers there will be a paragraph about not setting anything on the reglazed bathtub ever again, meaning, no soap, no shampoo bottles etc... this is a pretty good indication of the resilience of the process, they are basically worried about anything on the surface for a long period of time causing moisture issues and bubbling the 'reglaze'. 

Just make sure you are accounting for both the mold remediation as well as removing the source of moisture.  

I have a house I'm looking to wholesale but I have a concern about the roof.It was replaced a couple of months ago and the seller thought that the roofers were pulling permits but I can't find any evidence of permits being pulled on my city website.The roof was a tear off and a secondary moisture barrier was installed underneath.

There may be excessive moisture coming from the slab or subfloor causing the laminate to warp or as Michael stated the installer may not have left enough room for expansion.  

The fungus issue is due to moisture and ventilation.