Flash Cookies Are a tricky way which can be used to track you even if you have your cookies disabled!
Flash cookies were originally intended to be used to remember flash application relevant settings. However like much other technology it is getting abused.
Fortunately you can disable the flash cookie settings, click here to open the flash settings panel.
I would recommend to delete all cached files and configure the settings as follows:

For me I disabled the camera and microphone options, since I use neither with flash. Set to always deny.

Set global storage setting to none and enable never ask again.
Another important section are the flash player settings themselves.

Set storage to none.
Delete all cached content.
Enable never ask again.
Lastly you might want to disable the flash p2p upload capacity. I personally don’t like it because it is very intransparent.

Congratulations. You now secured your computer against flash cookies!
