Bit of an unusual one, I like to hold down the x- key at early stages of design to signify captions etc (so, 'Xxxxxxxx xxxxxx xxxxxxx xxxxxxxx') but oddly it won't allow me to hold the key down to do this, I have to type each one individually with a separate tap. It works with every other key except 'x'.
Not the most pressing problem in the world today I know, but I'm curious to know what gives?
Any ideas appreciated!
I don't know the solution, but it works for me. Maybe try trashing your preferences.