When I ran across some drawings that represent what a botnet looks like, all I could do was stop and stare at the beauty and the horror. Microsoft has resolved a problem with Excel; the problem caused some calculations to display incorrectly and served to embarrass Microsoft. I've resolved a problem that Apple caused on my Windows machine. In Nerdly News, the Mozilla folks are about to release Firefox 3 and the band AC/DC won't sell its new CD online; if you want it, you'll have to get it from Wal-Mart.