oh, it's a total farce in our case.
we checked the printout (you get a "proof copy" to agree, then the real thing is printed), and pointed out the very error which is now causing all the problems.
the registrar checked, and checked again, as this was the first time he had had cause to check this particular anomaly.
the answer came back as "this is what the computer prints, so it must be right"
well, not according to the passport office, it isn't 
and, the system is totally screwed up, as we cannot correct the error. dd2's name has been recorded correctly on The Register 9we have double and triple checked that) - the error occurs when the computer prints out the birth cert. what is printed is the only version we can get, and there is no error on the actual Register to correct 
which leaves the passprt office working from a birth cert which is wrong
, resulting in dd2 having a new name made up for her...
and I always forget to book her tickets in the wrong name, too, which causes all sorts of hassle as well!