Everyone has raised great points here.
I do like Craig's idea though of an "accepted solution" similar to what is done on the experts exchange forum merely from the standpoint that it would also speed up the process of finding out which threads still require input and which ones have already been dealt with sufficiently.
Then the common problems like the cache issue, I'm afraid, will always show up in the threads because it can happen when installing any of the extensions - which is part of the reason why it gets posted so many times and in so many different places. Perhaps, because the cache problem is an inherent issue with Dreamweaver CS4, maybe WebAssist should make it sticky at the very top of every extension thread and title it appropriately like, "How to fix JavaScript DW cache error" - or something that relates to what is commonly displayed by the error.
Best regards,
Brian