I still have the line. I've contacted a tech, and he suggests connecting my laptop to an external monitor, because he thinks the problem is my video card.
* The line does not appear in any screenshot.png I create.
* The line has color in it, but out of sync with the rest of the screen.
* The color in the line changes when the screen changes.
Dell Inspiron 1300, Ubuntu Feisty
After I plug in the external monitor, is there extensive set-up to be done? Any tricks or hazards I need to know beforehand?