I've got this weird bug. The progress bar in IE's bottom-window status bar keeps incrementing very slowly after an Ajax POST. At least that's where I think the problem is.
How can I tell what the hell IE is doing that's causing the progress bar to keep going? In FireFox, I would just look at the Console tab in FireBug and see what's up.
I turned Fiddler on but it doesn't pick up any HTTP requests or responses being sent.
What can I do in IE?
I'm not very experienced in Web debugging but you might try the Developer Tools that come in Internet Explorer 8. It's under the Tools menu, or just hit F12. I think the Profiler tab may be helpful. I had heard somewhere that the IE8 Tools were created to mimic Firebug's feature set as closely as possible.
I don't think there is a problem here, earnestly. IE has a bug where it shows that a request has not yet been completed when it has. This has been around for a while now, and I have tested my own applications against it. There is nothing happening and there are no connections waiting for a response, yet the browser still thinks there is an open connection.