Why are my flash game saves getting erased?

After installing stand-alone flash games such as Machinarium, Dino Run SE, and Space Rubbish (all of which are great games by the way) I find that my game saves keep disappearing.

I have read how cleaning programs like CCleaner can have this effect. I have CCleaner installed, but do not have it set to run automatically. I have found that whenever I start and then quit IE, my saves disappear. I also run Firefox, but it seems to have no effect on my saves.

My question is: How can I stop IE from deleting these local Flash caches?

As a side note: Do any other browsers have this sort of behaviour by default?

Make sure you allow flash to save data to your hard drive.

Right click the flash game and select Setting (or Global settings). Under the "Storage" tab, make sure "Allow sites to save information on this computer" is checked.

Adobe also has a page you can use to set flash settings: http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager03.html

Have you got IE set to "Delete browsing history on exit" and, in the Delete options, got the "Cookies" option selected?

This will delete the game saves if they are stored in cookies.