I have exactly the same issue - followed steps in this article but to no avail

[Jonathan Greenwood]

Now and then when I boot my machine (Ubuntu 13.10) and likely while running Chrome across various web pages (I think I'm usually in a browser, but I'm not sure), an administrator password dialog box is presented stating that the Dropbox request requires the admin password ( see an image of the dialog box at http://imageshack.com/a/img89/9084/5fy0.png ) - AS it is that I have not been asking Dropbox to do something, I have simply selected [cancel] on the dialog box...

Can someone explain why this is happening?

Thanks,
Tom

--------
fyi:

lsb_release -a;uname -a; dpkg -l | grep dropbox
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.2 LTS
Release: 14.04
Codename: trusty
Linux ubuntu 3.13.0-53-generic #89-Ubuntu SMP Wed May 20 10:34:39 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
ii nautilus-dropbox 1.6.1-1 amd64 Dropbox integration for Nautilus

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1460455/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Jonathan Greenwood (opentrail)]

Added package dropbox as thats relates to the problem Iḿ having.