Argh. Okay, I had a wrong info on the serial num, which *may* explain why my previous attempts didn't work...
EDIT: There. Packages in the first post updated. Let me know how these go!
@acarr: Yes, there was. Unfortunately the only way to do this (AFAICT) was through a binary patch of a java .jar (part of the Kindle framework), and that's waaaay out of my league ^^. Appart from this ss hack, the only other possible thing (AFAIK), is tweaking the timeouts before the Kindle goes to ss/sleep. It may not be particularly friendly on the batterly life/lifespan though.