Nooo wait I didn't mean language subjects. I'm doing French and German this year and I would definitely NOT take a laptop, simply because it's just a lot easier to handwrite, what with all the accents and weird letters and umlauts, which are really hard to find on a keyboard.
By languagey I meant English language-based, e.g. humanities subjects, as opposed to numbers-based like sciences and maths etc.
Nick: I did 2 law subjects, French and international studies. I took my laptop to everything except French classes for the reasons above, and international studies tutes (because they were useless and there were no notes to take, lol).
costargh: I carried my laptop around with me in a bag to every class. You don't have lockers or anything to leave them in anyway (unless you hire one) so you just carry all your stuff around, so usually you'll only lose something if you took it out and put it on a desk and forgot to put it back in your bag. I haven't had anything stolen yet.