IIS6 with IE8 not loading ASP.NET MVC site properly

This is odd, and I hope I explain it correctly.

When I de开发者_如何学JAVAbug locally with VS2008, IE8 looks like FF and Chrome (minus the obvious). It works well, and I'm happy.

When I use IE8 with our IIS6 box (Win2003) or Cassini, buttons aren't aligned, javascript errors occur, and some other CSS anomolies occur: Table cells missing colored borders, div elements having different dimensions by 2-3pixels.

If anyone has come across this, please let me know - It's completely baffling me

IE8 runs in different modes depending on if it's visiting a site running on localhost vs another server. It's weird, I know. I've run across this issue before as well. Use the developer tools (F12) and check which mode (Quirks, IE7 Standard, IE8 Standard, IE8 Compatibility) the browser is running in.

Could it be an old CSS file that is cached on the client?