When I am installing new version SQLyog over older version, content of the Personal Folder is clearing. It is not good. My be Personal folder need to be moved from Program Files to …/Documents and Settings/…?
Oh, I'm sorry, I thought about uninstalling process and clear install again, but wrote about upgrading. But if Personal Folder store important examples of quieries, do not delete this folder anyway so user can use own sources. I think when SQLyog is uninstalling it is enough to notificate user about Personal Folder is not deleted.