Update!
http://news.cnet.com/8301-1009_3-57366170-83/o2-fixes-phone-number-leak-explains-blunder/?tag=nl.e757
Also...
http://crave.cnet.co.uk/mobiles/o2-fixes-phone-number-leak-explains-muck-up-50006765/?tag=mncol;txt
Atomic_Blast :)