On the one hand it's good to see the problem being picked up, but on the other, an FOI request really wasn't needed - a sizeable chunk of what they asked for had already been provided in answers to parliamentary written questions a few months ago!
e.g.
HmOff, Vetting Compensation [24 February 2010] Column 562W- how much paid by CRB in compensation for maladministration [317218], table given, significant increase in last two years
and
HmOff, Vetting [7 January 2010] Column 529W- disputed CRB checks per year since 2002 with reasons [302193], table given, total raised 32,937 total upheld 16,268