I am using mac osx 10.5.8.
I have the latest version of Calibre and think it is the best thing since sliced bread thank you!!
However if you try to upload a large collection ( more than 50 books at a time to Kindle it
appears to freeze during the process, however I think it finally resolves itself after a minute or two and then works fine. I would change the spinning job wheel to indicate some activity during this processing time rather than nothing - which misleads us into thinking nothing is happening?
Thanks again for an amazing program!