It actually says \"linkdead\", but if your graphics are looking like in the screenshot, I\'m surprised that you could even read the message at all.
Anyway, this message only means that your client has lost connection to the server for some reason. This happens occasionally, sometimes even frequently. Sometimes the server crashed, sometimes packets get dropped somewhere on the internet, etc.. To my knowledge, the \"please report this\" is outdated, but it might become more important in the future when linkdeath isn\'t an everyday occurance anymore.
The solution is to just restart the client, and when ping responses come in (i.e., it doesn\'t say \"Fail\" ), log back in.
You should try to see if you can update your graphics drivers if your graphics look like that all the time, though.