Hi Bob and Jacksin,
The more and more I speak to people like yourselves and get more of an insight as to what their experiences are, the more I'm starting to wonder whether anyone nowadays knows the meaning of the word 'professional'!!!

And you are both right in saying that the tradies and specialised sales people (and i use that term loosely) are at fault also.
We now have no idea whether it was the tradies or the owners that have created this monster, but whoever is to blame needs to give themselves a hundred upper cuts for being so 'stupid'!
Even only yesterday, I was speaking to a complete stranger about renovating and she informed me that they 'just painted their new plastered walls with paint, no sealer used'.

My response....?? 'Bloody idiot, you'll be sorry'. Don't think she appreciated my reaction, especially when i explained what we are going through with our paint problem.
We have stripped all the walls that we could and they have now been replastered $$$$$ (thankyou previous owner!!) and BINDER SEALED (the magical words).

The walls that were not as badly damaged, have been sanded, skim coated, sanded, binder sealed, sanded small blisters, skim coated affected areas, sanded, binder sealed, undercoated, and whoalla!! we may have had a win!!
This fix up so far, has put us 3 weeks behind and we consider ourselves lucky as the plasterer was very understanding of our dilemma and helped us out immensely by turning up to do the work on a weekend!!! AND did a brilliant job. Most tradies would have taken advantage of that and charge an arm and a leg, but i must say, he was a 'house angel' in disguise!!! I guess it helped that he had been faced with the same problem with a house he bought a year ago.
Anyway, we will continue with 'repairing the walls' to the rest of the house as at this stage we have only got through 3 rooms so far with the time it has taken to repair them.
Thank goodness my husband works like a trojan and can't keep still for long. We have had some very disheartening moments with this house, but we have both pushed each other ahead...(more because we can't sleep in the garage for much longer...).
How to test a marriage....renovate!
Thanks for your input guys..still interested to hear more.