Thomas 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.

After over a million downloads of WordPress 2.9 and lots of feedback from all of you, we’re releasing WordPress  2.9.1.  This release addresses a handful of minor issues as well as a rather annoying problem where scheduled posts and pingbacks are not processed correctly due to incompatibilities with some hosts.  If any of these issues affect you, give 2.9.1 a try.  Download 2.9.1 or upgrade automatically from the Tools->Upgrade menu in your blog’s admin area.

Unfortunately, the recent 2.9 release triggered a bug in certain versions of PHP’s curl extension.  With these versions of curl, scheduled posts and pingbacks are not processed correctly.  To fix this problem as well as a handful of other, lesser issues, we are quickly releasing 2.9.1, the first maintenance release of the 2.9 line.  Help us get 2.9.1 ready to go by testing 2.9.1 Beta 1.  The easiest way to test Beta 1 is to install the WordPress Beta Tester plugin, elect to get on the point release development track, and then perform an automatic upgrade via the Tools->Upgrade menu.  You can also download the Beta 1 package and install manually.  Fourteen tickets have been fixed in 2.9.1 Beta 1.  Since the curl problem and a couple of other problems are dependent on specific hosting configurations, any and all testing help is greatly appreciated.