This goes along with the Nexus stability problem, We're running Nexus 8.3 rev 4 on a Windows 2003 server that is maxed out with ram (4gig), and have the same problems ie; we have to reboot several times a day. I've tried diaster recovery but it only helps for a short period and then the problem starts again. I've been told by Nexus that I should try upgrading the software to start with so my question is this: What is the most stable upgrade to this point?