Dear Wegner,

First thanks for your works.
I'm recently use LRtimelapse as my main software to composite timelapse, and I really like it deeply. But after some days I found there is a problem with my MACBOOK PRO.
I'm using Lion, when the first time I launch LRtimelapse to load my RAW photos (500Pics by Nikon D80 NEF format), the computer getting very slow response, it take around 1 minute to open a new tab in Chrome. it last even when the loading finish. My macbookpro has 4GB ram and with i5 CPU, I have check the RAM usage in activity monitor, it seems I have only 12MB free memory.
I'm not so confident but could you tell me is it true that LRtimelapse will load all photos into RAM when first time open a folder?
I have tried to use some software to free memory but it didn't work very well, the best way is logout or restart the computer.

I don't know if you have confront this problem or not, or if you have good suggestion to avoid restart or logout.

of course, the second time when you open the same folder, every thing move fast.