Upon starting my system, a window pops up and states:
"Dropbox Start Required - Start Dropbox to finish installation."
If I ALT+TAB then it claims this a window of "Update-notifier". This seems strange. What is going on here?
Things that I have done to try and figure this out:
apt-get upgrade, but this still comes up,
- checked in "Settings" -> "Online Accounts", but no Dropbox is linked, and
rkhunter, but it only flags well documented false positives.
I don't even have Dropbox (I don't want Dropbox). I don't have
nautilus-dropbox installed, but I seemingly have
thunar-dropbox-plugin installed as I experimented with different DEs at some point. If I press close, it tends to pop up again a little later.
I am using Ubuntu 18.04.4 LTS, fully updated.