I believe in PCLinuxOS and Mandriva you can change the theme by doing as root
plymouth-set-default-theme <insert theme here>
You can list installed themes with
I'm not sure about turning it off. I think it's tied in a whole lot of other stuff, so simply removing it is problematic. I believe you can change the kernel line in GRUB to see boot messages rather than the fancy graphical screen, however. From what I found removing "rhgb" and "quiet" should do it.
The Force Quit thing in Ubuntu is specific to gnome-panel. You can achieve the same thing by binding the command "xkill
" to a key combo in ~/.config/openbox/lxde-rc.xml
Should bind it to CTRL+x, or replace with whatever you like.