Our imaging folks typically image about 10 pc's at a time. They boot
from the isolinux cd, type manual and then switch to another pc through
a usb kvm. When they return, the screen is covered in random ascii
characters. The only way they can then continue is to reboot and start
over. They must then keep that pc selected through the entire boot
process until they get the bash prompt.

Has anyone else experienced this? Any solutions?