Upgrade to mySQL 5.5 on Ubuntu 11.04 [duplicate]

How would I go about upgrading MySQL to version 5.5 on Ubuntu Server 9.10?

Would I be better off waiting for it to be an easy $ sudo apt-get install mysql-server job?

I'm also unsure as to which download I would need to get from here.

What's New in MySQL 5.5

Here are some recent improvements to the speed, scalability, and user-friendliness of the MySQL database and the InnoDB storage engine.

A step by step guide to upgrading to MySQL 5.5

This doesn't solve your problem but here's the wishlist bug for packaging MySQL 5.5.

A good option might be to wait for a version from dotdeb.org. Once it's available in Debian unstable/experimental, there will be packages available there.

http://www.dotdeb.org/tag/mysql/