Share your experience!
Can you boot in safe mode and see if the same occurs?
/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008#U348008
About your post here:
/t5/Xperia-Z1-Z1s/Z1-issues-after-5-0-update/m-p/978442#M40644
Kindly delete it and don't create any other threads. You should be able to do that.
This is how
http://talk.sonymobile.com/t5/Software-Updates/Lollipop-New-Features/m-p/955490#U955490
check the bottom
I've moved your post here as it seems to be an SD card issue not a lollipop issue.