Re: Let's set things straight
It's been a couple of decades but I was involved with the implementation of a fairly sizeable stock/inventory/accounts system for the AS/400. It was a heavily customised version of an off the shelf package written by the supplier. The amount of testing we did was enormous and took over a year but the amount of bugs we discovered was shocking. Regardless, though, it was up to us to work with them, adequately test the system with a large cross section of employees and make sure the issues were fixed before we signed off on it. A serious enough problem could have potentially ruined the company so at no point did we simply trust it all worked because they said so.
You're right. Fujitsu are not innocent but with projects of this nature the largest burden of responsibility was on the Post Office to thoroughly test what it was they were buying and make sure it was fit for purpose before it went live.