WordPress 3.0.3 is available and is a security update for all previous WordPress versions.
This release fixes issues in the remote publishing interfaces, Which allowed under Certain Circumstances-Author and Contributor-level users to Improperly edit, publish, or delete posts.
These issues only Affect That Have remote publishing enabled sites.
Remote publishing is disabled by default But You May Have enabled it to use a remote client publishing Such as one of the WordPress mobile apps. These settings You can check on the "Settings? Writing "screen.
Download 3.0.3 update or Automatically from the "Dashboard? Updates "screen in your site’s admin area.