If you have noticed all your blog images breaking after upgrading to WordPress 3.0 from WordPress MU, you will need to make a simple change to the .htaccess file.

As an administrator for a WordPress MU install, I’ve been getting comments about the RSS feed in WordPress not fetching the latest feeds. The RSS feed information that appears on the page ranges from a fetch that is a few hours to a day old. I’ve confirmed this is an issue with 2.9. This is an issue for blogs that need to pull alerts from an RSS feed within a timely basis, e.g. every 10 minutes.

The workaround to this is to use the KB Advanced RSS feed plugin instead of the one that’s in WordPress.