[eluser]syntax error[/eluser]
It's my understanding that it's rare for ISP's to route traffic through proxy servers, although this issue has arrisen up north, namely the dreaded AOL.
Most developers are clueless (including yours truely) as to a workaround without decreasing security measures.
The proxy server will change your IP address, so you can understand the troubles this causes. The only software I have come across that deals with this issue without decreasing security levels is vBulletin, but I haven't the foggiest how they managed it. Blasted proxies. Most software simply will not manage user sessions with a dynamic IP, and that is perfectly understandible.
Saying all of this, i'm still uncertain whether my ISP proxy is the cause of the timeouts, or perhaps it's got something to do with the proxy server's cached results? This is an area where I don't really know what i'm talking about, although it interests me greatly, i'll stop right there!