I just upgraded to 3.0.5 over the weekend, and am hitting a few bugs. The latest most significant problem is that the "Save Draft" button doesn't seem to work. When I click it I do get the "Post Updated" message, but if I try to preview the post, I get a 404 error. Also, this saved draft does not appear on my list of draft posts.
I noticed that the permalink displayed under the title isn't correct - I'm using the [domain]/%year%/%monthnum%/%day%/%postname%/ structure, but the permalink only displays as [domain]/%year%/%monthnum%/%day%// - the %postname% is left out, but there is an extra / at the end showing that it should have been there.
I updated the .htaccess with the code at the bottom of the Permalinks page, but it's still not working.
I also tried using the standard [domain]/p=%post_id% permalink, but that also didn't save to the list or preview. However, when I tried to preview it, instead of a 404 error I just got a page with no post text - the theme showed fine, and page elements that were hardcoded into the page showed up, but no post title, body text, author, etc (nothing coming out of the database) displayed.
Please help. I use both of these features a lot. Thanks.