We run our NMC on a seperate Windows box and we have 8 backup servers we access through this, four which are quite busy, and we generally have 4 or less using it at anyone time. However on a daily basis the NMC will lock up and require a restart; when we log onto the NMC servers the gstd.Exe process appears to be doing nothing and memory and processor usage is low. Anyone have any suggestions what the issue might be?