Can anybody help me with a weird window manager problem in Xubuntu Hardy?

Xfce4-terminal is opening without window decorations. It has the right shape, but instead of the title bar, frame, close button, etc it is just solid black. I can click where the buttons should be and they work, but they're not visible. Window decorations on all my other apps (at least the ones I've used so far) have been fine.

Compositing is off and I've tried changing the window manager style and the theme and it's still doing it. I also tried re-downloading and re-installing the xfce4-terminal, xfwm4, and xfwm4-themes packages in Synaptic but there was no improvement. Does anyone have any suggestions for me? Or has anyone had a similar problem with Hardy?