I tried to get an answer to this by opening a support ticket a week or so ago, but haven't heard anything yet.
I just upgraded to NUTDC version 5 (5.3.2 -- the latest), and the response time is unbelievably slow on my computer. Checking off to-do items is incredibly sluggish and unresponsive -- checking off a to-do item takes a few seconds each. With version 4, the response was lightning fast. Im' running the program on a Dual Quad 3Ghz Mac Pro with 14 GB of RAM, OS X 10.5.3. I'm just at a loss as to why this "upgrade" would be 100x slower than the old version or why it's struggling so hard to check off to-do items with all the processing power and memory.
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