I'm not so happy with OmniGraffle 3 actually. I'm using 3.0 (v56.1) with the attached diagram, and it is *slow*.
I've got almost no other apps open (Safari, Mail, both hidden), but when I try to drag on a new item (like a firewall) it takes a full 4 seconds for it to appear. Then when I click on the background sheet, it takes another full 4 seconds for it to deselect! (That's 15 images by the way, adequtely less than the shareware cap of 20...)
Is this just something they put in to annoy you into registering it, or am I just having bad omniluck?
If this app worked faster for me, it would rock the house, but it's slow interface is a huge pain--not worth 107,73$ to me!