Using Lucid, in the form of Turnkey Core. I'm setting up Grub to boot into Windows by default, with an option to boot into Ubuntu as a recovery mode, with a script to restore a default image to the Windows partition.
The idea is to have a splash screen which tells the user to hold Shift for recovery options, otherwise it'll just boot to Windows.
Unfortunately, while I can get my splash screen to work, it doesn't show up until I press a key -- doesn't seem to matter which key, as arrow keys, letters, and numbers all seem to work. At that point, the splash screen shows up and displays at the top left corner -- this appears to be the GRUB_HIDDEN_TIMEOUT, and the number updates every time I press a key; otherwise, it remains static until the actual countdown has finished. (I guess this indicates that it is also not showing the countdown, which it should be doing, as GRUB_HIDDEN_TIMEOUT_QUIET is set to false.) Everything functions normally from this point: If I hold Shift, the menu is displayed, otherwise it boots into Windows.
Got the menu to be hidden in multi-OS mode by using #11 here.
Clarification: My issue is that the splash screen does not appear until I press a key. I need the splash screen to show up on its own.
Contents of /etc/default/grub and /boot/grub/grub.cfg available here