maybe you has chosen a web page from 'dropbox.com' as the home page for Internet Explorer, so that when ever you start Internet Explorer it displays this page. The page is an error responce which comes up when someone attempts to create a screenprint without first logging on to dropbox.
To remove this simply choose some other home page for Internet Explorer to display when it first loads.
My system is a Compaq, AMD64 Athlon,supposedly, running XP. In Deember 2010, I loaded a program that modified my Windows Exploxer. The link below is a screenprint of my desktop.
On the left hand side, there is a blue ribbon. I have uninstalled every program that I loaded during December 2010 and the Explorer modification remains. Is there a way to find the modification and to disable it?
Thanks for any help that you might have.