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Old 04-25-2009, 05:47 PM   #9
sirbruce
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Posts: 1,859
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Join Date: Feb 2009
Location: Columbus, OH
Device: Kindle Touch, Kindle 2, Kindle DX, iPhone 3GS
Calibre has had some PDF issues but I assume all of those are addressed in the latest release?

What you've described sounds very much like the computer running out of RAM and having to rely on disk paging. I imagine Adobe Professional has a pretty large footprint, and so do web browsers if you have open a lot of tabs. Combine that with a few Calibre processes and the OS and I wouldn't be surprised OS X starts hammering the disk.

It may be that Calibre has a memory leak where memory allocated when you import a new book into the database is not immediately released. So over time, as you add more and more books, the Calibre process consumes more and more memory until thinks reach a tipping point. Shutting down Calibre completely and restarting it would clear up that issue.
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