I'm sure my new Windows 8 laptop comes with IE10.
On my previous laptop, I had Vista and IE9 and FF. Used IE 99 % of the time.
My new machine comes with spell checker and highlights, even corrects, misspelled words. From somewhere I gleaned that this is an IE10 feature, rather than Windows 8. If this is not the case, this reply should be ignored of course.
While it is handy to be corrected or told about mistakes, it can also be irritating as I cannot switch it off easily when I write in Dutch and every single word is underlined. It drives me mad. You can switch it off, but then have to restart the machine. It's quick and easy, but annoying, as I tend to do my email in one sitting and switch regularly between the languages.
Even when switched off, I am convinced the automated spelling corrector is half heartedly working, as my Dutch all of a sudden littered with misspelled words like 'heft' for 'heeft' (has). When I use our 'main machine' (Vista, IE9), I don't make these typos.
Switching the language of the machine to Dutch doesn't help, and changes everything to Dutch; desktop becomes 'bureau blad' and though I know what it means, I have learnt 'computering' in English and the Dutch words are totally unfamiliar.
Don't know if I have added anything to the discussion, but if not, I've aired a grievance, which is good!