I've been running WordPress a few days now, and up untill now it has happened two times sofar that the file /wp-admin/inline-uploading.php seems to break. Why this happens is beyond me. I just don't touch the files within the wp-admin dir myself.
Anyway, this is what happens. I can upload and select images fine and later when I get back to the write/edit page I can't. Instead of the image upload functionality a scroll bar appears with one very long HTML comment tag without the closing construct.
The first time I fixed it by overwriting the file with an original one from the downloaded zip file. But since this is the second time I plan to debug it a little when I get home this afternoon.
This is the inline-uploading file as it is on my blog as we speak and this little puppy results in that long string of "--"'s.
To me at first glance there's nothing changed here. But I don't have a correct version handy right now, blocking corp. firewall :(
[snipped by moderator. consider a service like pastebin.com for huge files]
As per moderator's request: http://pastebin.be/933/