Why is the timeout so short? Please increase it! When I am composing a detailed post I often find that when I hit the preview or submit button I am redirected to the login screen. When I log back in all my work is lost.

This just happened to me on a post which contained information I think could have been of real use. But my time is of value and I do not have the time to reconstruct the entire thing (which included quotes from various external sources).