There's a new WP Update that is out and it patches a small security issue related to logged in users.
Here's the word from the official WP blog :
Source : WordPress › Blog WordPress 2.9.2Thomas Mackenzie alerted us to a problem where logged in users can peek at trashed posts belonging to other authors. If you have untrusted users signed up on your blog and sensitive posts in the trash, you should upgrade to 2.9.2. As always, you can visit the Tools->Upgrade menu to upgrade.