nginx sites available redirecting badly

Question

I have a server with multiple sites running on nginx. I'm trying to add another one, and somehow I keep getting redirected to the wrong path.

What I usually do is copy from a working one and change the domain and paths, then create de symlink. I've also checked that they both have the same permissions, so I'm not seeing any mistake on my part. all paths work and of course I've restarted nginx. I also restarted the whole server out of desperation.

The failing one

server {
listen   80;

root /data/alvarezarango.com/www;
index index.php index.html index.htm;

server_name alvarezarango.com www.alvarezarango.com;

error_log /data/alvarezarango.com/logs/error.log error;
access_log /data/alvarezarango.com/logs/access.log;



location ~ [^/].php(/|$) {
    fastcgi_split_path_info ^(.+?.php)(/.*)$;
    fastcgi_pass unix:/var/run/php5-fpm.sock;
    fastcgi_index index.php;
    include fastcgi_params;
}


}

the working one:

server {
listen   80;

root /data/spiraxtime.com/www;
index index.php index.html index.htm;

server_name spiraxtime.com www.spiraxtime.com;

error_log /data/spiraxtime.com/logs/error.log error;
access_log /data/spiraxtime.com/logs/access.log;



location ~ [^/].php(/|$) {
    fastcgi_split_path_info ^(.+?.php)(/.*)$;
    fastcgi_pass unix:/var/run/php5-fpm.sock;
    fastcgi_index index.php;
    include fastcgi_params;
}


}

I get redirected to my main domain, but i can't see why. Is anything I can check to understand the redirects?