It doesn't group windows on the panel as well as gnome 2 does.
You lose allot of the nice easy features from gnome2 for doing things like using shared files or printers from windows computers.
The panel is allot less flexible and harder to configure. There are also less panel applets available.
Mouse-button back doesn't work in several parts of the interface.
I'm sure there are workarounds for many of these issues but for an out of the box experience it is still a regression.
* Key bindings for switching keyboard layouts don't persist, I have to reconfigure them every time I reboot or X restarts
* Auto-suspend when lid is closed no longer works reliably. I sometimes find a really hot laptop in my bag after a while.
That said, XFce is much nicer than Unity.
If I had more free time I would love to contribute to something like Xfce (or E17) and turn them into a first class Desktop Environment.
It doesn't group windows on the panel as well as gnome 2 does.
You lose allot of the nice easy features from gnome2 for doing things like using shared files or printers from windows computers.
The panel is allot less flexible and harder to configure. There are also less panel applets available.
Mouse-button back doesn't work in several parts of the interface.
I'm sure there are workarounds for many of these issues but for an out of the box experience it is still a regression.