I just installed proxmox 3.1. I can ping to the interface. I can ping from the interface. I had this same server running proxmox 2.8 last week and a hard drive crash and had to start over.(Now with redund raid hard drives)
Yes. I get the security warning the the error "Error code: ERR_EMPTY_RESPONSE" . I tried it in IE and that is working ok but its not working in chrome. I cleared the cache and it is working now.