I was hoping for answers to the rest of my post as well....
You have selected Windows 7 as OS - is this where Java Console is installed?
Where are you using the Java Console?
On the master server or robot control host?
On your desktop?
If using Java Console on your desktop, how are you logging onto the master server?
Using IP address or master server hostname?
If IP, add hosts entry on your desktop for the master server and then logon using hostname.
I have seen issues when logged onto master server as IP address.
Ensure that your hosts entry on your Windows desktop/laptop matches the NBU master server hostname exactly.
Does the master server have more than one interface?
If so, can you confirm that you are connecting to the master server hostname/interface that is use by NBU on the master?
Have a look at this old discussion:
https://www-secure.symantec.com/connect/forums/netbackup-windows-admin-console-very-slow
Something else to check:
Ensure that FORCE_IPADDR_LOOKUP is disabled on the master and desktop. See http://www.symantec.com/docs/TECH65866