I guess this is a bug of .Net framework 1.1.4322
<OBJECT id="MyObj" classid="Mydll.dll#MyAssembly.MyClass" ></OBJECT>
IE requests for dll component on the port 80 of your server, even your host server is working on 8080.
You may try
- Install. Net Framework 1.1 SP1 on your client machine that fixed this problem
- Or, set your web server port to 80