The problem with the classic units is that they have a small cache, once you surf a little it fills up and the problem arises that you will get the message page too big to be shown in its entirety. As i said they are notorious about it and my old classic drove me nuts with it. The plus has more memory/cache and very rarely will the problem arise, i've had my plus for two years and i only got page too big once and that was only because i was on a site with a ton of graphics. I feel the pain of the classic users and its not your sites fault with the problem they are having, basically there is nothing that can be done.