Degraded performance over time
 

Has anyone else noticed this? I'm running on a MacBook Pro (intel, dual core, 3 g memory, 10.4.9). After using Graffle for a while the performance gradually degrades until it is quite noticeable. If I quite and restart Graffle, performance is back to normal. This is very repeatable and happens whether or not I am running any other applications.

I think it's a function of the number of edit operations executed, but I'm not sure. All I know is that about every 45 minutes to 2 hours I find I need to restart the app to get good performance back.

I have about 30 pages of text, bitmaps and line graphics in my document if that helps.

I should have mentioned that I'm running 4.1.2