Sandisk Sansa Zip Clip Refreshing Media Everytime Turned On

I know this is an old thread but I am having this problem as well.  It is deleting my radio presets every time I turn it off and on because it says it is refreshing my media.  I realize that a lot of time has been devoted to this topic on this forum but there doesn’t seem to be any answer.  If my unit is not still under warranty, is there anything else I can try to fix this?  It’s kind of irritating to have to keep resetting the presets.  Isn’t that the whole point of presets - so I don’t have to keep resetting them!  Any suggestions at all other than warranty, which mine no longer is covered by?  Thank you.