The SecondaryNameNode uses 50060 as it's HTTP server port. Check if any other process is already using that port (tools like netstat can help), and either make the identified service change port/die or change the secondary namenode's http port number via the new config property called "dfs.namenode.secondary.http-address" (Was: dfs.secondary.http.address) to a different number.
-- Harsh J www.harshj.com