Quote:
Originally Posted by AmandaReckonwith
Probably a file got corrupted and Calibre needed to reread everything from scratch.
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That's possible. Calibre caches metadata information on the device (a file called metadata.calibre), if that gets corrupted, it has to rebuild that file first.
If you want to know, you could try reenabling the PDF metadata reader and see if that causes the connection job to take that long again.