On 19/01/07, Jon Anunson janunson@design-plus.com wrote:
"Sorry! We could not process your edit due to a loss of session data. Please try again. If it still doesn't work, try logging out and logging back in."
It's an intermittent problem, during the writing of this post, i succeeded in editing a page, and uploading an image, but got session-related errors many times.
http://lists.wikimedia.org/mailman/htdig/mediawiki-l/2006-July/013790.html
Rob Church