We recently upgraded to 5.7 from 5.3 on our BD8800. Although the previous Web interface has some issues, IMO it was a far better interface to view the important information that I need on a daily basis than the new interface. The new interfaces is less professional. I really dislike not being able to look up my interfaces by name/label like I could with the previous version. Before I would only have to go to the a GUI session infrequently. Now I can not get anything done other then manipulating port/vlan associations without going to the GUI.