hey,
thanks for your help again with this. i think i am reaching the limit of my abilities on trying to repair this.
strangely iPhoto seems to work (albeit very slowly) when i log in to this computer with my partners login.
iPhoto just gets stuck with the spinning wheel trying to rebuild thumbnail caches with my login.
i haven't tried to download the iPhoto library manager, as our connection is a drearily miserable 3mBps. also, the computer has become very slow.
i guess my next question is
where do i take it? will the apple store perth sort it all out for me? or should i just take it to any computer repair place.
it is quite old now (late 2009) and is in need of something. maybe even replacement? is it possible it is simply too jammed up with information? i have attempted to delete as much as i could from it ( an had successfully moved the entire iPhoto library to the external HD,) but i wasn't confident on what i could and couldn't delete.