Probably already mentioned: Cookies

[PhreakWently]

With some MOTDs and some YOM's when you read it, close the message it logs you out of LoTGD because of cookie settings, is that a browser thing or a game thing?

[Voratus]

Sounds like a browser thing as I've never experienced that myself.

[LadyPhoenix]

Sounds browser related. Override your settings for that site to allow cookies and you should be fine.