Why does my IE progress bar keep going after every other page load?

Question

I'm seeing this issue.

I have a relatively simple ASP.NET page with a gridview and some buttons. When I click a button, the page re-binds the grid and posts back.

What's strange is that every other time I click the refresh button, the IE progress bar (in the status area) stays "on", signaling that the user that the page is still loading...forever.

I've reproduced this on other pages--it seems to occur every time a post-back occurs.

Confirmed in IE7 and IE8, but doesn't happen in FF3.5.

Any ideas?

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Update 1:

This appears to happen only when the server is configured for HTTP Compression.

In either case (compressed or not), fiddler shows just a single request which is served successfully. But, when compression is enabled, I get the problematic behavior.

Answer 1

I have seen this in the past with various setups, and never sorted it out. In one case I was able to use diagnostic logging on the server side to confirm that all http requests were complete. I found a technique that worked in order to make the progress bar go away though it really made me cringe: After a period of time (using setTimeout), write a 1x1 iframe to the bottom of the page, loading a blank html file. Of course, this was using IE5 or IE6 or something (it was ages ago), so that may not work any longer.

Answer 2

I have the same weird problem and never sorted out, although searched a lot on net. Any help will be appreciated.