Six Apart released today version 3.17 of Movable Type. The changelog is small, containing only 4 entries, and the release will not affect the majority of users. The changes are:

• Installation at the root of a domain no longer continually logs out the user.
• Fixed URL-encoding of uploaded file paths (e.g. images%2fbeach-pic.jpeg)
• Fixed a bug in the nofollow plugin which causes HTML sanitization of everything within an <MTPings> block.
• Fixed a bug in mt-db2sql.cgi which caused it to fail in certain situations when subcategories are in use before conversion.

If any of these apply to you then it might be worth upgrading.