Comment 11 for bug 875266

Thank you. I'm OK with checking settings during startup if it's only for the whatsnew page when there is a new version.

Looks like starting the proxy service is lazy intentionally:
http://hg.mozilla.org/mozilla-central/annotate/767693e248aa/netwerk/base/src/nsIOService.cpp#l653

I'll look further into your patch, thanks.