This is ridiculous. This has been said many times before. NO!!

It's either Maemo and Android OR Maemo and Meego!

For people new to this. Stick with Maemo and Android! It's good.

@ Nokia7Linux: YES! You will be BADLY AFFECTED!
You will LOSE MULTIBOOT and have to reflash your phone.
Why?
Meego kernel over writes part of Multiboot and causes errors. Don't do it.

@ SUN!L: What? Bootmenu does not flash any kernel. Just changed what OS is booted (NAND or SD). Did you install Multiboot?
Also, put the phone on charge and make sure it's not flat.