A nice article, but remember to state this is MS Windows based as other operating systems are available.
I would add to the list a couple of main annoyances. The Insert key. When pressed once, its effects may not be immediately noticed, when you go back and edit a sentence you find you are overwiting what is already there. Simply pressing Insert again to fix it. Next Autocorrect - Word and a number of other programs may automattically correct spelling mistakes or words that are not in its dictionary. This can lead to unreadable text as the replace words may be unrelated to the article. To fix, turn off autocorrect and proof read your work before moving on.
Nice tip Andrew on the rotating display, I will do that on the wife's PC straight away as it always confuses her!