It seems like there’s a real problem with the auto save function on WordPress at the moment, if you let the auto save kick in before pressing ‘Save’ or ‘Publish’ then all your musings are lost. Unfortunately for me I only found this out after spending about 20 mins writing a post 
It seems to be ok if you hit ‘Save’ before the first auto save hits, you’ve got about 2 minutes as far as I can tell. So the moral of this story is get in there first and press ‘Save’ yourself! Or you could always resort to offline authoring instead…
Hopefully this’ll be fixed in 2.5, I’ve seen at least 10 threads on WordPress.org complaining about it, so it seems to be quite a common problem. Roll on the 10th of March!
