For a number of past versions now, when Calibre is shutdown, a screen message says:
Shutting down
Running database shutdown plugins. This could take a few seconds...
I really do
NOT consider 2+ minutes to be "a few seconds."

Yes, it
DOES take that long for me!
Before this, when you clicked the
X in the upper right, shutdown was basically instantaneous. So why did the need to have this prolonged "running database plug-ins" happen?! To me that seems like it is something the people who create the plugins should have to solve and NOT have to have Calibre's shutting down take so long!
I mean, seriously, my Calibre shutdowns do usually take over 2 minutes -- during which it fills my monitor screen and I cannot do anything else except twittle my thumbs.
Well, that isn't exactly true. I've taken to using the Task Manager to shut down Calibre once I click it close, because that minutes wait is so damn annoying! So far, the forced Task Manager shutdowns has not affect Calibre or any of the plugins I have in their performance, so I am at a lost as to why having to wait
*minutes* for Calibre to shut down became necessary!
AND it is
NOT my computer, I got a top-of-the-line, high-end, FAST pc last year and Calibre is the
ONLY program where I have this problem!
I've use Calibre for decades and have even donate to its site. But this seemingly-pointless, extended shutdown has me VERY ANNOYED with this program.
I cannot imagine I am the ONLY one who has this problem or that I am the ONLY one bothered by it, but to me, this is a
MAJOR BUG for Calibre and needs to be resolved
ASAP.
But, I suspect, nothing will be done. I've become very cynical about Bug Solutions after reading a lot of the comments in this forum.
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