Microsoft ruleset is differentially broken in Chrome vs Firefox

[pde]

We've had some persisten problems with the breakage in the Microsoft ruleset. However I'm seeing something stranger on this page:

http://windows.microsoft.com/en-us/windows7/security-checklist-for-windows-7

In chrome, the page's CSS is completely broken. In firefox 4.0.0 (which should be the same ruleset), it's fine. I don't see mixed content indications in Chrome. We should figure out what's causing this.

[pde]

Possible cause:

GET https://a248.e.akamai.net/f/1737/7533/6/res2.windows.microsoft.com/resources/4.2/wol/shared/css/windows8_site_ltr.css net::ERR_CONNECTION_REFUSED security-checklist-for-windows-7:59
GET https://a248.e.akamai.net/f/1737/7533/6/res2.windows.microsoft.com/resbox/en/windows/main/15d2470f-0fcf-45e9-bf5b-c943236a61cf_242.css net::ERR_CONNECTION_REFUSED

(some subsequent image loads are also blocked...)

[pde]

This wasn't solely an HTTPS Everywhere bug... looks like it was caused by an interaction between this rule and AdAway running on the phone I was tethering with. Firefox wasn't running through that proxy.