I think I found some in a novel I'm currently reading.
That's not surprising. It would be surprising if it were in every edition.
It's acutally a fairly common problem in newer books. Someone I know used to work for a publishing company and said there was a huge push to get work out quickly. So sometimes gramatical errors get missed.
I'm reading a book right now from 2009 - apparently a bestseller - and by page 15 I already found two errors. Weird ones too, something along the lines of "the light from the streetlamps were bright." It is distracting and makes me not have high hopes for the rest of the book.