This is the board http://www.ebuyer.com/product/173797
The network and general setup is textbook. I have a decent core (never gave me any problems with 0710) with a 1TB internal hard disk that does all my storage, no NAS or anything like that. Gigabit network via netgear switch. Everything is running with its default settings, except the board mentioned aboved which as I said in my first post I set the "geforce" and "VPDAU" options in web admin for this MD.
"What is the result of hdparm -Tt <drive media is on, eg sda1>" - what does this do please? What are we looking for here?
As I say, none of these issues with 0710, but I don't think that's relevant as I didn't have this mobo as my MD then. I will say that I think it is to do with the number of videos present - if I filter them, by TV shows for example (not that this is working properly either), it scrolls much more smoothly.
Textbook meaning internet is going directly into the core on eth0 and eth1 goes to a switch which your MD is physically connected to without any other dhcp on eth1 side?
hdparm tests the media cache and buffered read speed. Sort of a benchmark. I had a drive which had DMA issues which effected overall IO that behaved similarly. Took me a while to figure out because in all other aspects the drive seemed just dandy. I am running the little acer revos as MDs on UI2 without issue.
So in my case it would be
sudo hdparm -Tt /dev/sda
Network/drive screweyness would be where I looked first. I am not an expert here, just trying to help.