After months of perseverance (we completed Dec 06), finally seem to be getting some of the jobs done and allegedly everything will be done by tomorrow - I'll believe it when I see it, well when the people managing the property for us see it to be precise!
Nagging is the only way I'm afraid so be prepared to do it otherwise you'll get nowhere.
You may also have to be realistic about what they do / don't do - there are jobs in ours which were not negotiable and they had to do but others you are probably better sorting yourself in one way or another as you'll be waiting a very long time and in the end the time, effort and maybe cost of chasing them to do it is more than just fixing.
Ian