wish i knew, but i can tell you that the site definitely sped up when i changed the \'new post\' behavior. it has been pretty slow lately though, like in the last week and a half or so.. i\'ve been watching the server loads, and they\'ve been getting pretty high, mostly during peak (business) hours.. we\'ve also had an increase in traffic lately, which could add to it..
i\'ve talked to mike before about moving to a dedicated server, and it\'s something i really want to do, but it\'s also something that\'s pretty greek to me as far as setup/administration/optimization. there\'s some $ in the .info operating fund - probably plenty for a decent server.. with some more donations i can/will start shopping around for someone to set it up..