>>I just tested a little on a server here. Changes published to the web server immediately showed up even when just refreshing an existing page on the browser.
>>
>>How are you placing the DLL on the server and how are you checking that the update has kicked in?
>
>I have a Bin directory for each site. This is where the application DLL is stored. I also have Framework.dll, which is my .NET framework. I upload using my FTP application. This application uploads into a temporary directory. At the end, it just moves the file into the production directory. Then, on the next hit, the refresh of the DLL takes place. This usually takes about 10 seconds. But, when that happens, sometimes, it will stay in wait more forever and no response is send back to the browser. So, I have to do a iisreset /restart to have it back.

I update mine the exact same way by just copying to the bin directory and it works great. I may not have the traffic you do, so maybe that has something to do with it.
Tim