Eclipse doesn't highlight references anymore

Question

I have an odd problem. In Eclipse Ganymede, I used to be able to highlight a variable, and it would highlight the use of that variables in that method. However through some

Answer 1

There's a little "highlighter" icon on the toolbar - it toggles "Mark Occurrences".

From the preferences window, the feature you mean is configured by navigating to:

Window -> Preferences -> Java -> Editor -> Mark Occurrences