This has been bothering me since I upgraded to the latest media browser. From what I have been able to gather the watched indicator that is the check on files is checked on every item. I thought it was my own error so I deleted my cache, tried resetting to default and ended up erasing all data from media browser uninstalling and then reinstalling and set the date for the indicator to 1983 thinking somehow I had set that wrong.. and it STILL says every file has been watched. This is annoying when watching a tv series because you cant keep track of which ones you have watched. I tried the media browser forums and cant seem to find anything other than its a known bug.
I assume everyone is affected so what are people doing to fix it?