This is my first post! So here looked like a good place to start.
I used to be totally pro aperture, and loved aperture 2. I was so excited to get aperture 3 and all the new features it promised, made me think that I may never have to export images in to photoshop for more heavy editing again! the brushes were a fab inclusion and I loved them...
However, I'm not sure exactly why, as most of you don't seem to have this problem, but I just find that it runs so slowly it is unusable - it doesn't crash quite as much as mentioned above, but it is still very tedious! It also makes my whole computer slow down when ever aperture is open, I am running it on a relitively new iMac so I don't think my comp is the problem!! I have done the latest update and it has made little change.
I have now resorted to buying a copy of lightroom - and so far it is working excellently. I wish I could get aperture working better, I prefer the interface, just can't stand the slowness!