Not only was the airspace closed,but there were significant delays through HRN/SFD/LYD/DVR because of the computer upgrade.Normally to avoid these delays we would flightplan via wait for it........BHD,which of course we couldn't do,and any plans routed via BHD were invalid which forced us to route through HRN sector!This on top of BCN FIR down most of the day with some delays in excess of 4hrs.What chance have we got?