On updating to screen-4.0.3-4.fc7.x86_64 screen stopped working. [saikat@sioux ~]$ screen Directory '/var/run/screen' must have mode 777. chmod 777 /var/run/screen fixes the problem
Fixed in screen-4.0.3-5.fc7.x86_64 *** This bug has been marked as a duplicate of 233527 ***