1550819 - Cannot Login to Infoview or CMC on a 4 server clustered environment

• Users cannot login to Infoview or CMC on any of the 4 Tomcat servers.
• All 4 CMS and Tomcat servers are up and running
• Network connectivity among all 4 servers has been checked to be fine
• when clicking on the Login button to Infoview, the status bar shows that it is in the loading page but instead stays frozen at same position.
• Upon restarting that specific tomcat server, users can login twice before the same issue starts happening again.
• After stopping both tomcat servers and re-starting just one tomcat server customer logged in successfully 3-4 times,
  on the 4th login attempt the browser hung at "Cleanup in progress please wait"

BOE XI 3.1 FP 1.5
Red Hat Linux 4
Tomcat 5.5
Clustered deployment of 4 CMS & Tomcat servers

cannot login Infoview CMC cluster , KBA , BI-BIP-ADM , BI Servers, security, Crystal Reports in Launchpad , Problem