I can see the links, but they do not work properly, the send me to page 1 everytime.
I tried the function next_posts_link() and previous_posts_link(), but the result is the same.
tried the alternative code you gave me, now I only see the content of the page, not the posts.
This is a page selected from wordpress interface as "homepage", plus there is this custom template ( as you can see ) to show all the posts except the ones from cat 42.
If I use your function I see the content of the page, not the posts
If I select in the reading settings of wordpress interface the page as "blog page" I see articles from all the categories, it does not exclude the ones from cat 42