PS - it is still frozen on the same photo and I can neither close iPhoto nor do anything else within the programme, even close it. I clicked on stop import but it has no effect, just carries on circling at importing. I tried to close it but now have the delightful little rainbow circle going round too...
...and now, 3 hours later, it is still going round. I have no option but to switch off forcibly as I can't close the programme and nothing is happening. Mac seems to be great for those that have used the system from the start but for us switchers, it isn't.
OK I found out how to close the programme and did so - now I try to reopen iPhoto (the copy on my ext HD) and it starts to open but I get a dialogue box with the following message: The iPhoto Library is locked, on a locked disk, or you do not have permission to make changes to it. I click OK and it closes again - just great. Help please. I do wish I hadn't changed OS but now I have, I really need to learn how this works and stick with it. I am reading the notes on the forum and really trying but it is not easy, nor intuitive! Thanks in advance...