"Middle mouse button is ignored"
Middle mouse button functionality IS working like FireFox since 0.x years ago. So it looks like something is not setup correctly. Probably you have a Logitech mouse with IntelliPoint software installed which will not let the middle mouse button work as it should?
"Prompt windows block the whole browser"
This will only block the current tab, since a couple of versions before. Very handy.
You can also view headers, maybe not as good as "Live HTTP Headers":
1. CTRL + SHIFT + I (Developer tools)
2. Resources tab, activate
3. Select the resource, html source, or other media on the site
4. Goto headers 'tab'
My mouse is a common USB mouse. It may be that sometime the BIOS does not recognize the mouse as a 3 button mouse.
The prompt windows blocking may be an actual bug in Chrome for Linux implementation.
CTRL+SHIFT+ I is the same shortcut in Chrome for Linux but it does not start Developer Tools when I hit those keys.
Anyway, I went to the resources tab and there is no headers tab. I suspect that only appears with some extension installed. That is how Live HTTP Headers extension works on Firefox too.
The User Agent change extension did not seem to be available last time I checked. Maybe it is recent.
I did not find the same HTML Validator extension as the one I am using in Firefox. I tried the first I saw in the page you mentioned but it does not seem to work the local validation, which is necessary to validate pages shown for authenticated users.
Michael John Burgess - 2010-05-06 15:14:17 - In reply to message 3 from Manuel Lemos
Headers, Middle Mouse, Tab/Window Blocking & Extensions all work as expected on the last few windows versions. Headers is not an extension, you need to (double) click on the relevant file to inspect the headers sent with it.