The whole point of a CV is to illustrate to the prospective employer, whether or not you have the skills/experience for the position you are applying for, so typo's are quite important.. but not the be-all.
As a CV reviewer;
1) Does Kaarolyne have a name that is spelt different to convention? Yes he does. He's going to be "eccentric" and a Crazy. Great if I want someone for media/creative arts... but I don't. I didn't get to where I am today by hiring Crazies. So Kaaz goes in the bin.
2) Does the applicant with a sensible name have the right skills I want (key words in amongst all the grey lines of drivel about how they single-handedly saved ICI from ruin etc. that are applicable to the role, or any qualifications that are relevant)? I'll read on.
3) Job stability. At least 5 years in two of their last three of jobs for a PAYE... contractors are different. First-jobbers and youngsters I give much more leeway to. But I don't want drifters and flakers. I didn't get to where I am today by hiring drifters and flakers. Drifters and flakers go in the bin.
4) The CV is for me to find the right person, so minor typo's and grammar... I'll put my eye on them in the interview.. but generally not a problem unless there's "too many". I didn't get to where I am today by having a "hard" too-many either. One might be too many, or ten might be, depending on whether I like the rest of the CV or not. But if I have 5 similar CVs and I want a short-list of 4... guess which one goes in the bin?
5) Hobbies and interests are not that interesting, particularly if it hints at a life more exciting than mine. Don't mention interests and hobbies. You'll go in the bin.
6) Concise, so I know what you can do for me/the position is better than a load of flannel that leaves me wondering whether you were a fighter pilot in the air-force, or a cleaner for British Airways. If I can't tell what you actually did, you go in the bin. If I can tell what you did but that's not what I'm looking for... you go in the bin (but with a little regret).
7) If you have your photo on the CV and you look like a Donkey/Chav/Crazy.. you go in the bin. Similarly, the CV has to be a piece of paper with words, in black ink, on it (Arial font ... not Comic Sans or anything with too many seriphs, please). I didn't get to where I am today hiring people who can't understand what their CV is for and how it is used. ComicSans goes in the bin. Any colour not black goes in the bin.
8) Anything that pops up, I need to plug in, download Jizzasoft 3.5, start, wind up, power, construct or de-code etc. might be very clever and creative.... but I have 300 CVs to read and I didn't get to where I am today by wasting time plugging in, downloading Jizzasoft 3.5, starting, winding up, powering, constructing or de-coding . Yours goes in the bin.
9) Usually I am left with 2 or 3 good CVs. Perfect!