Reboot (5.10)

[Me - Atlantic]

I came back to the office from a trip this afternoon, and rebooted my
desktop running 5.10 .  When I logged into gnome, I got a dialog box
with this message.

A link called "Link To Old Desktop" has been created on the desktop.
The location of the desktop directory has changed in GNOME 2.4. You can
open the link and move over the files you want, then delete the link.

Can anyone tell me where this came from? (I wasn't aware that "Old
Desktop" was even implemented here prior to this)...