Since upgrading to 3.4.2, my menu items disappear each time I create a new post or update an old one.
I disabled all plugins and tried again: same result.
No error message.
Only the one custom item of my menu stays active, I have to rebuild the whole menu every time.
I checked using two windows, and this happens a split second after updating.
I already increased memory in my php5.ini file.
Any other idea ?