I've tried numerous times to log in from both the homepage and the dedicated login screen (https://rennlist.com/forums/login.php?do=login). As video ads run, some text input does not get captured. There's an extreme lag, skipping some characters. If one pauses the video, the problem goes away. It happened several times. (IE10 on WIN7).

[I'm a web developer and quality assurance engineer (tester), and things like this are considered bugs in most professional websites. Not a criticism, just a heads up.]