rEFIt Troubleshooting

Here are some common problems with rEFIt with solutions and explanations.

Legacy Booting: Not Found Error: Read this if you get "Not Found" errors when booting Windows.
Bluetooth Keyboard Problems: My Apple Wireless Keyboard doesn't work in rEFIt/LILO/Windows. Why?
General Keyboard Problems: The keyboard doesn't work in LILO or Windows. Can you fix rEFIt?
No rEFIt menu after Safe Sleep or power loss: My Mac lost power and when it started up again there was no rEFIt menu. Why?
Linux partition shows as EFI System (FAT): My Linux partition is marked as type “EFI System Partition (FAT)” in the MBR partition table. How did that happen and how do I fix it?
Linux partition shows as FAT32: My Linux partition is marked as FAT32 in the MBR partition table. How do I fix it?