I have made a few posts on it but probably a while back. Basically, the search function (and browse function beyond a certain number of messages) on Google's usenet archive has been broken for probably a couple of years now. As far as I'm able to determine Google are aware of it but seem totally disinterested in fixing it. The tragedy is that since they took over the usenet archive from Deja News they are effectively the sole source of it. In addition, just to make the archive as unusable as possible, they block you if you scroll through the pages at anything other than a snail's pace, something you are often forced to do since their search function is totally screwed.