Please, stop fighting. Is the best way to close a question without getting any answer. I’m just sharing my experience. I had the idea of deleting through the FTP the last plugin I installed and “magically” my blog came into life again. Then I realize that there was a sentence that told me that this plugin was not tested with my WordPress version (which, by the way, is the 2.7), but in previous experiences, the plugin supposedly fitted. In some way, the answer still remains unanswered, because we didn’t know why all this happens… It would be a good thing to ask this to one of wordpress programmers… just an idea…