The title pretty much says it all. I'm running SW2009 sp3.0 with the (now) included Workgroup PDM. If I check in a document and select "Retain Ownership", it doesn't do that. At least it both takes ownership away in PDM and makes the local file read-only - it's not screwing that up. Also, it's doing this while checking in a working copy revision. Any ideas?
Just a guess but open the "pdm vault admin". Look in the "vault settings" tab and see if the 3rd block from the bottom is checked ("bind ownership...").