Yep, specifically it's the 'netsh int tcp set global ecncapability=enabled' that kills
https://profile.ea.com for me. Never seen this with other web sites before. Clearly this shouldn't happen with ECN, so I'm enclined to blame the web site.
Anyone still running Vista that can see if it's working for them? If it works with Vista when ECN is on then it's probably Win7 at fault. If not, I suspect the web site/server is at fault.
UPDATE:
Looks like others on the net have found the same with this web site:
http://forums.steampowered.com/forum...1011770&page=2
It looks like the finger is certainly being pointed at the web site. If you have Dragon Age you'll have to turn off ECN and moan at EA until they fix their server. You can still use the other tweaks though, CTCP being worth while alone. You could even write a batch file to switch ECN off and on when needed for when you want to play that game.
This seems to be an isolated issue.