boot loader graphic changes

Why does my boot loader(GRUB)graphic randomly change to penguins playing on ice.

First day of winter? (northern)

It’s built into the bootsplash image configuration. There is a switch to enable/disable it and an integer value to control how frequently it appears (or randomly). This link describes howto modify:

http://en.opensuse.org/Animated_Penguin_GRUB_Splash_Screen

Doesn’t happen here (although I haven’t rebooted for a couple of days). Obviously good localisation: we have a few penguins in Oz but not too much ice for them…