MacRumors is reporting that Apple has sent out an email alerting customers to an urgent Apple TV 3.0.1 update to address an issue involving disappearing content. I haven’t received the email myself yet, nor am I home to check (and I stream all my content anyway), but in case any of you on Apple TV 3.0 are affected, here’s the letter they posted:

Dear Customer,

If you’ve installed the Apple TV 3.0 software update, you should immediately update to version 3.0.1. This prevents content from temporarily disappearing until it is resynced.

To update your Apple TV software:

1. Reboot your Apple TV (unplug the power cord and plug it back in)
   
2. Select Settings > General from the main menu
   
3. Select Update Software
   
4. Select Download and Install
   

Note: Your Apple TV will conduct a restart, which is followed by the Apple logo and a status bar.

For more information, please refer to this article: http://support.apple.com/kb/TS3116

If you need further assistance with your Apple TV, contact AppleCare. Sincerely,

Apple TV Team

Let us know how it works for you!