I use Sonar 2.4.1, Maven 2, Eclipse SDK 3.5. Sonar is up and running at http://127.0.0.1:9000.
I've installed Sonar Eclipse Plugin and when i try to add a sonar server and i click "Test connetion" button (http://localhost:9000 with or without user and password) i don't get "Connected successfully".
Waiting for your answers.