I started the Applications Manager in Linux using the respective script (startApplicationsManager.sh).
The applications manager has started successfully and also sending out SNMP polls for which it was configured for.
When i try to work using the web-client (http://hostname/applications.do) I see nothing. Only a blank page is displayed in IE (In firefox, some java script error is shown). Previously (say a couple of weeks ago) the same URL was opening properly and Applications Manager was working as desired.