What is making my cursor 'randomly' disappear when using gnome-teminal?

It happens often that my cursor on gnome-terminal disappears, forcing me to work on a new tab/window. It seems like a random occurrence. Does anyone else experience this? What about other X terminal emulators? How can I fix this (or maybe it's just a bug)? **update**: A simple work-around is to switch away from the terminal and switch back. **update 2**: I don't experience this any more, maybe because I'm using GNOME 3 version of the terminal.