Hot on the news that U-Boot has been uploaded to the extras-devel repository today. Here are the latest instructions on Dual booting PR1.3 and MeeGo 1.1 using U-Boot.
As these are instructions that are liable to change, here is a link to the original source
WARNING: This guide is experimental and everything you do with this guide is at your own responsibility and risk
Big thanks to the continued work by the MeeGo N900 hardware adaptation team.