I had a hard time naming the thread, so let me describe the problem:
On a choc noppoo mini: when I press the backslash key (above enter) and the apostrophe key rapidly (in LaTeX, \'a produces à, and \[ ... \] is a very used part of the language) the backslash key is doubled:
\\'\\'\\'\\'\]\\]\\]\\]\\\[\\[\\[\\[\[\[\[\\[
\\;\\;\\;\\;\\.\\.\\.\\.\\/\\/\\/\\/\\,\\,\\,\-\\-\\-\\=\\=\\=\
doubles when done with -=][';/., (the keys to the right of the alphanumerical keys)
Every time I was pressing the backslash key only once, the times when it wasn't doubled were when I was doing it more slowly.
It doesn't double when I do it with the other keys
\a\a\a\a\a\a\a\a\a\a\a\a\m\m\m\m\mm\m\m\m\m\m\mm\m\
I am not using autohotkey right now. (I know it can do some funny things)
As I wrote this I noticed something, if I press one of the cursed keys while the backslash key is still pressed, it makes a second backslash appear. Maybe when I go fast, I press the next key before I release the backslash key.
Pressing keys while holding down backslash key
\asdfaszxcvzbgfhgfhjlkpyuoi87907856732341231dfasdzxvzcxvc
\a]\\\[\\'\]\\\[\\'\]\\\[\\'\]\\\[\\'\]\\\[\\;l\.
I noticed this today while working on Linux, so I will bring the keyboard back home with me tonight say if it does the same on windows.
I will also bring my filco to school to try it on Linux and see if that happens with it too.