Your pastebin post, along with the Safari success, tells me the full feed is at least getting out.
As I've tried to explain, that's pretty much all the WP can do. What happens when the feed is picked up is beyond your control a lot of the time. You might want to see if you can get any joy out of Feedburner support - especially since you now have 2 pastebin source snapshots taken within minutes of each other for them to compare.
I am sorry that we can't help you further as I know this has been going on for a while and you must be getting really frustrated about it. I've tried validating your feed and apart from 1 very minor issue, it's valid.
I really don't know what else to suggest.