Just did the UP4 install, and for a couple of reboots everything looked fine after I switched back to the Mint-X theme.
Now, though, I get my normal background (the Mint Debian screen) on the login screen, and for a few seconds after I login, but then the background goes dark purple and it won't change with the Desktop applet.
On a hunch, I removed Nautilus and all the attendant packages, and the desktop background turned black, and the icons on the desktop disappeared (despite xfce being set to show them). The difference, though, is that the background for the login screen is now black, as opposed to my chosen desktop background.
I added just Nautilus back in (and whatever other packages it loaded with it), and the desktop went back to purple and I got the icons (though they don't look the same as they did before the upgrade, and are not what xfce says they should look like). There is still no desktop background on the gdm login screen.
After quite a bit more digging, it looks like xfce wants to run Nautilus as my default file manager, despite the fact that I hadn't installed it originally, and that the preferred application is, in fact, supposed to be Thunar. I have no idea why UP4 installed it in the first place.
I am not very skilled with all the geegaws & doodads for various X window managers/desktop envirnoments, so any help would be appreciated.
MikeC






