Our company still officially uses .NET 1.1. On a small scale (and unofficially), I've been using v3.5 applications within our department. The only compatibility issue we've run into is a single Java web form on our intranet.

For whatever reason, once you have v3.5 installed on your PC, the application never loads. I realize this is a very general question, but why is the page not working? If the PC has both v1.1 and v3.5 installed, shouldn't the page continue to be compatible?