Catlin, I caught your drift on that. I'm not saying that it's not a reasonable theory and for that matter I do tend to agree with it, but I'm not %100 convinced, and even if it did happen in some cases, is it plausable to say that it was responsable for all disapearances? There may be more to it; reasonably I think that the bubbly things might be it but there's some part of me that doesn't buy it as the complete explaination. - TJ