Levenberg-Marquardt

Hey

I know this is probably a long shot, but does anyone here have any experience with the Levenberg-Marquardt-algorithm?

http://en.wikipedia.org/wiki/Levenberg%E2%80%93Marquardt_algorithm

Speciphically I’m trying to estimate the position of an entity with this algorithm. I got it working to a certain extent, but something’s still very wrong in there. I’m looking for someone who has some experience with it and who is familiar with it’s inner workings to figure out what is wrong

Thanks