I'd like to thank Ms. Selina Kyle for identifying a few more open proxies for us so we could block them.  Due to the high volume of vandalism that comes from open proxies (and the very low volume of legitimate edits), it's a general presumption that anybody who (a) edits through one and (b) generally acts like a shit, is a vandal.  Ms. Kyle meets both halves of that condition.  I don't recommend that she be unblocked any time soon (I really don't see any evidence that she has ever substantially contributed to the encyclopedia, and I have no reason to believe that she would start doing so were we to unblock her), but I may have been mistaken in identifying her with the program vandals she shared an open proxy with.  She is still a very disruptive user, and her current block is totally warranted on that basis.  I must say that using an open proxy in combination with her persistently combative and unfriendly attitude definitely has not helped her case.