Same slowness issue here, on Lion w/ 5.3.4
 

[QUOTE=kkelly;101918]I experienced same symptoms -- swirling rainbow, 2 second delay, on every return to the application. Unchecking quicklook made the problem go away. Painful since no one buys for quicklook preview, but everyone buys to draw a diagram and everyone (on Lion at least) is effected.

On another note...the forum signup process is pretty harsh. Made me think/work pretty hard just to add this 'me too' note.[/QUOTE]

I have the same issue here, on a MBP i7 8GB SSD w/ Lion, using 5.3.4.

My document has only one canvas, and around 100 simple shapes (rectangles). I do have a lot of fills w/ opacity around 50%, and some nested shape groupings.

Any ideas?

I just upgraded from 5.2 to 5.3 on a Macbook Air running Lion. I was working on a document with one canvas, 1000mm X 800mm and less than 25 objects consisting of mostly rectangles, an arrow connector and text.

Everything worked great on 5.2 and every operation was responsive.

After the upgrade to 5.3.4 I get the spinning beach ball frequently and unless this is fixed soon will have to reinstall the 5.2 version so it is usable again. I did send an email to support about the problem.