There are threads on this topic in Launchpad. I read one suggested workround which you could try if you wish (it was a Ubuntu workround but it may work in LMDE as well). The fix was to edit the file /usr/share/gnome/autostart/gnome-settings-daemon.desktop in the following manner:
Change the line
Exec=bash -c "sleep 2; /usr/lib/gnome-settings-daemon/gnome-settings-daemon"
You will need a root text editor to do this (sudo gedit) and make a backup of the file before you mess with it.
I repeat that this is a Ubuntu fix not an LMDE one, and I cannot test it for you because I do not have the error anyway, so it is done at your own risk.
My other reading on this matter suggests it may have something to do with the proprietary Nvidia driver or possibly very fast drives (like solid state ones). If the above fix does not work for you, you can test the Nvidia theory (and it is only a theory) by renaming /etc/X11/xorg.conf to, for example, xorg.conf.old then rebooting. This will force the default Nouveau driver to start instead and you can see if that does anything. (Although you may think the Nouveau driver is worse than the original error
Like I said I can't test any of this because I don't have the error.
Fujitsu Lifebook AH532. Intel i5 processor, 6Gb ram, Intel HD3000 graphics, Intel Audio/wifi. Realtek RTL8111/8168B Ethernet.Lubuntu 13.10,Ubuntu12.10 (Unity), Mint16 (Cinnamon), Manjaro (Xfce).