http://kb2.adobe.com/cps/141/tn_14157.html
Due to recent enhancements to the Adobe Flash Player installers, you can now remove the player only by using the Adobe Flash Player uninstaller. To remove Flash Player, simply download and run the appropriate uninstaller for your system using the steps below.
- Download the Adobe Flash Player uninstaller:
- Windows: uninstall_flash_player.exe (205 KB) (updated 7/30/09)
- Mac OS X, version 10.3 and above: uninstall_flash_player_osx.dmg (258 KB) (updated 7/30/09)
- Mac OS X, version 10.2 and below: uninstall_flash_player_osx.dmg (1.3 MB) (updated 05/27/08)
- Mac OS 8.x, 9.x: uninstall_flash_player.hqx (33 KB)
- Save the file to your system, choosing a location where you can find it (for example, your desktop). Macintosh users may need to open or unstuff the .hqx file.
- Quit ALL running applications, including all Internet Explorer or other browser windows, AOL Instant Messenger, Yahoo Messenger, MSN Messenger, or other Messengers. Check the Windows system tray carefully to make certain no applications are still in memory which might possibly use Flash Player.
- Run the uninstaller. This will remove Adobe Flash Player from all browsers on the system.
Note: The uninstaller cannot remove files currently in use.
If you have any instances of the player open in your web browsers, instant messaging clients, stand-alone SWFs, or projectors, then the uninstaller will complete but some files may not be deleted. If this occurs, then close all of your applications and run the uninstaller again to ensure that all files are removed.
Note: Internet Explorer users may have to reboot to clear all uninstalled Flash Player ActiveX control files. If you’re not certain, select the “Show Details” button in the Flash Player uninstaller. If there are any log lines that begin with “Delete on Reboot…” then you’ll need to reboot BEFORE running the Flash Player installer again.