Update! WordPress MU 2.8.5.2 has a tiny fix for a post publish bug. You can download it from the usual place.
WordPress MU 2.8.5.1 has just been released and may be downloaded immediately.
This is a security and bugfix release and a recommended upgrade for every WordPress MU site. What happened to 2.8.5? I had it tagged and ready for release when Luke reported a little problem. It wasn’t possible to edit blogs! It was an easy bug to fix but code had been tagged and zip/tarball archives created so I had to create new ones. Thanks Luke! Saved the day. 
Thanks to everyone else who contributed and helped in any way during the making of this release. Your help is invaluable.
This release also fixes a problem with slashes in blog and site options. You’ll be prompted to run the site upgrader. Please run it on all your blogs. For a more comprehensive look at what has changed recently, take a look at the Trac Timeline.
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This is the personal blog of Donncha O Caoimh, Irish WordPress developer and sometimes Photographer.
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After updating to 2.8.5.1 one of my users (with an Author role) is getting this error when trying to publish:
Thanks, Donncha!
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Hi,
After I upgraded to WPMU 2.8.5.2 some of my plugins were not working fine.
My configuration:
1. WordPress Version 2.8.5.2 (WP MU, directories)
2. Theme Name – bp-default
3. Blog URL http://intercer.net/blogs/
4. PHP And MYSQL Version PHP5, Mysql 5
For example: wp-download manager
When I try to add or edit an existing item in the download list, it redirects to the main blog admin page in my wp-mu.
Another example: wp-bible
Submitting the form to get the results redirects to the main blog public page
To solve these issues for now I downgraded to 2.8.4
Any ideas why this happend in the latest version?
Thanks,
Lucian