For Flash, the current version is 11.7. Usually Adobe's installer is able to replace a recent version with the current one but if that is not working, Adobe also supplies an uninstaller to completely remove Flash so you can start fresh. This article has a link: [[Flash Plugin - Keep it up to date and troubleshoot problems]]. For PDF, the plugin check site only considers the 11 series to be current. If you prefer to keep the 10 series (Adobe Reader X or Adobe Acrobat X), you can update to 10.1.7. I suggest using the update feature inside your Adobe Reader/Acrobat product to do that. For Adobe Reader X, use Help > Check for Updates. Does that help?