I've been in IT for over twenty years, but today I am feeling like a right ol' fool.
For quite some time I've been annoyed with the seemingly stupid spelling mistakes in some of my stories, despite the fact that I proof-read all stories at least three times before posting. Now, English is not my native language, so the odd misplaced punctuation or a rather odd selection of words here and there can hardly be avoided, but writing 'top' instead of 'too' is something that shouldn't happen to someone who thinks that he has a rather solid grasp of the English language.
I finally found the culprit. I finally checked the Autocorrect settings and found that it was turned on. As one great philosopher once said: D'oh!