After updating to Xubuntu 14.04 the other day, I noticed Ctrl + Space stopped working in both Eclipse and NetBeans, but I cannot find where it's bound. Nor does it appear to do anything.
I have looked in the Settings Manager on the Keyboard, Window Manager, and Settings Editor (XFCE-specific) applets, but none of the commands are bound to that combination. Is there another applet that defines system-wide shortcuts?