pabro, seblod routing is sometimes a mistery for me too but what you desribe should normaly work.
When you created links to articles in article list, you have selected some menu item, right?
1) What type is the menu item you selected for your links?
2) If the type of selected menu item is SEBLOD List, what joomla object is the target menu item listing? Article or Category?
Can you test another menu item for your article links (SEBLOD List type, doublecheck that menuitem is listing articles not categories).
Michal