I've just upgraded to the new WP and whenever I make a new post _encloseme: 1 appears at the bottom.
In a previous post I posted a link to a file, then I deleted it and now at the bottom of that post I see enclosure: http://www.bbc.co.uk/radio/aod/shows/rpms/radio3/privatepassions.rpm 41 audio/x-pn-realaudio-plugin
When I go into either post to remove this the text isn't there to remove....
A friend of mine had a similar problem - but it was a fresh install of WP. When she refreshed it disappeared.