I think, it would be a good idea, to have a troubleshooting section for articles, organized by themes (OD, mail, afp, ....)
Today I've had some trouble with a "DBERROR db4: fatal region error detected; run recovery" on Cyrus.
Just before reconstructing, I found a nice hint that leads me out of all that trouble in easy solution ....
I think, it would be nice to have a central accesspoint for such hints. That could spare some time in searching.