I am a new user for Linux. The other days ,I ever changed some thing, but I forgot what it is. Now ,when I run ./mythfrontend for my mythtv, I get this below. What is wrong ? Thanks in advance. [root at localhost bin]# ./mythfrontend Xlib: connection to ":0.0" refused by server Xlib: Invalid MIT-MAGIC-COOKIE-1 key mythfrontend: cannot connect to X server :0.0