Erm...
""In days gone by, if a trader in financial services had a desktop issue, a second-line support person would go there, and they'd bring with them another desktop and just swap it out," points out David Cowan, head of consulting services at Plan-Net, an IT consultanc . "There's no root cause analysis; you just get them up and running ASAP. But with VDI, you have more control.""
Well no, it might be what a consultancy which pays it's tradefloor contractors 250 a day does, but most places you'd have a go for at least 30-40 mins before a swap out due to the length of time for app installations on the replacement box. Unless you miracously have a perfect copy to hand of said machine...