I've been doing some testing and SRG Clean Archives version 4.1 seems solid for WordPress 2.3 with my testing but it would be nice to have some other users test it as well before the official 2.3 release in two days.
The plugin can be downloaded here.
Be sure to download version 4.1 as I do have an older version as well for people still using the 2.0.x branch or WordPress.
Please report any quirks here.
Thank you in advance.