I'm running Jenkins on its bundled web server on http and fronting it with Apache HTTP Server. I have configured Apache to only accept requests on its HTTPS port and proxy them to the Jenkins HTTP port.

This works fine except for one ugly annoyance: IE pops up a warning with the following:

Do you want to view only the webpage content that was delivered securely?

I'd like to get rid of this error for my Jenkins users.

I think the error comes from the following line:

loadScript("http://usage.jenkins-ci.org/usage-stats.js?...");

This issue was reported in earlier releases and was fixed in v1.418 (2011/06/27), but apparently has crept in again.