550EX inconsistency with 10D

[Sebastian]

Thanks Sean, but I have already done that. I have heard to just trash the 550EX and switch to metz. I like Metz, I use them with my Mamiya's and results are fine.

-MH

Try what I suggested before you ditch the 550. Once you get the hang of how it works, and why it does what it does, you will get excellent results. I get excellent results with the setup. Try it, you'll like it... ;)