kde is taking too long to login.
it takes about 1 minute.
I am using Fedora 23, but this problem happened in Manjaro, Fedora 22, openSUSE.
I need to post that you guys can help me?

$ more .xsession-errors
http://pastebin.com/dBMLkTc9

$ dmesg
http://pastebin.com/rjWvEQDk

Networkmanager applet?
viewtopic.php?f=289&t=129140

I I disabled bluetooth and restarted the notebook.

systemctl disable bluetooth.service

the problem remains the same, taking one minute to login.

My session starts empty.

On that thread, actually the networkmanager plasmoid seemed the culprit (unrelated to BT)

If I disable NetworkManager , how will I manage my connections in kde ?

The point is still to figure the cause... ...

is there any way that I can see in real time what is being initiated?
so I can see what is causing the slowness.

I used the kde for 7 years, never had a problem like this so annoying .
I installed gnome , and are logging in under 10 seconds.
But I do not want to use the gnome / xfce / mate .
I disabled the akonadi , but remains slow .

Just upgraded the fedora, and I am again posting the .xsession and dmesg .

$ cat .xsession-errors
http://pastebin.com/ZnTkmRrv

$ dmesg
http://pastebin.com/bUm1SQRx

Remove the nm-applet and see whether that changes anything. If yes, you know the cause and can focus on that. What's so hard to understand about that?