Happy to say that like the original poster, my save problem resolved itself the next day. We did find a workaround the first night when it wasn't working - we were able to edit existing entries, but not save new ones, so I synced the Ipad with my windows mail contacts and thus ended up with a heap of contacts on there. Of course a lot of them were contacts we did want on there that just needed a few more details added, but we also got a number of contacts that were able to be edited to what we wanted to add but couldn't.