Problem trying to create a views with tabs. Link of tab doesn't point to the path I set
I've not had the pleasure of Views 3, but I think I can see what's wrong. I believe you want to have three displays:


Articles, which has a default menu tab (and you want Views to provide the parent menu item)
Blog, which has a menu tab (but not default)
Events, which has a menu tab (but not default)


(Currently the displays are set up as default tabs, which is why they point to the parent item - just like the path for the View tab on a node view doesn't point to node/x/view but points simply to node/x.)