Liferay: menus' order changes arbitrarily -

Liferay: menus' order changes arbitrarily -

i going crazy problem! in top navigation bar of site have 4 menus: menu 1, menu 2, menu 3, menu 4 example. since yesterday, after added new page (which deleted later), menus have taken reverse order, menu 4, menu 3 , on. command panel, reorder them way should be, when click save button leave command panel, orders 1 time again change, time randomly.

any thought why happens? using liferay 6.1.

i managed solve problem going database , changing/updating menus' priority value. should be. reason @ point when ordering had gone wrong, setting had persisted in database, no matter how many times changed orders through command panel , saved it.

liferay