I ran into something really strange today. I have been using a 3rd party client to post my blogs, however, I tried to post one in WP admin, and the post was just stalling for ages when trying to publish it. It would be posted, as I could reload my blog and there it was just fine.
First I tried to shorten the post, no luck, then I put in some plain text that was equally as long, went in just fine. I even deleted the ping urls as I thought maybe that was timing out.
Eventually I narrowed it down to a url that was in the post, but it is just one url, and it need not be in the href, so a string will do.
I had a link to amazon.com, which was causing the post to get posted, but the response page in WP admin was not coming back, eventually I get a browser timeout in Safari
If you paste into a new post:
tell it to publish, not a draft, for me at least, it hangs. I can not seem to find out why, even
hangs as well, but some variations do not, it seems to be pretty specific to this url at least.