Today we've decided to give TeamCity 3.1 a try and did a clean install on a test server (3.0.1 version works fine but on a different server). The installation finished without a problem but after trying to create a new user in IE7 the following message appeared: "Please enable cookies in your browser to proceed with login" (the user was created but couldn't login). We've tried to disable all security settings in IE7 without any success. Also this problem is not computer specific, though we didn't try it on IE6. Strangely enough everything work fine in Opera and Firefox.
Do you have any idea why this happens?