In MVC portlet :
In the following scenario the portlet is catching the ready event twice for each portlet present in the page :
1- add portlet to page
2- remove it from page
3- add it again to page
allready verified that the portlet.js in "ROOT\html\js\liferay" is firing the portletReady event only one time.
Liferay Portal 6.2-ce-ga2 tomcat bundled