WordPress 3.0.3 released. Even I do not use remote publish, I still upgrade five blogs I managed to latest 3.0.3.
It is simply and easy, just click the auto update link and done.
This release fixes issues in the remote publishing interface, which under certain circumstances allowed Author- and Contributor-level users to improperly edit, publish, or delete posts.
Click here to get the latest copy of WordPress.
For mutil-user installation, the upgrade process is same as individual installation.