Puff,
I'm not justifyin anytin simply saying how things are. Take it how you like it as I really don't care. I'm here to pass on info as I find it.
My comment about pieces of the puzzle refers to the necessary timing and very small windows of opportunity to deploy an and almost unprecedented series of changes on a world wide basis and not the context you have applied.
Claret,
Nope, it was not the amount of server traffic I am told.
Yes, there was to be a NIS test site but that got overtaken by other events as can happen.
Bottom line with the changeover was that something went wrong that was not seen in the test bed - both internally and externally - and has now been corrected and with the change on 10 Nov, will improve again.
If you all really are so put out by this weeks events, sit down, write a letter/email to the airservices CEO and ATC general manager and put forward your thoughts rather than setting them down here and winding each other up.