When you try and manage the Secure Store Service Application
The trial period for this product has expired.
This is a known issue and to resolve you should apply the latest Service Pack or Cumulative Update for SharePoint Server 2010 (both Foundation and Server) see: http://www.tsls.co.uk/index.php/2010/10/18/sharepoint-2010-versions-cuhfsp/
This issue was first fix in the August 2010 CU http://support.microsoft.com/default.aspx?scid=kb%3bEN-US%3b2276336
Ha Ha, I was searhing for secure storage – Not quite what I had in mind! 🙂