In an effort to “answer the last remaining questions”, Maurice has posted another tidbit about ghosting. This installment addresses unghosting a document library by modifying the custom document library fields.
Ghosting/Unghosting is a big issue in SharePoint IMHO. I got into a big back and forth with some other SharePoint bloggers here back in August of '04. I still think it's an issue and should be addressed within the vNext SharePoint.