It's fine if you switch from text to link though.
Try again, my last fix should have solved that issue too.
Oooh, it actually has nothing to do with the cache, my bad.
The real reason it didn't work the first time is because I didn't put in a proper link before switching to a text post.
So if you make a link post and input a http://+ url that it accepts, you may then switch to a text post and type something and hit submit. If you DON'T put in a proper link before switching to a text post, your text post will not submit.
It's fixed. I did have to clear the cache once more so other users might still have the problem unless they do that.
(post is archived)