As I said in topic I have just upgraded from latest 14.04 to newest 16.04 . Some minor issues are documented like loosing mouse pointer after openning screen lock. But this is more important. Firefox crashes when one need to open file either through menu or through web form or from extension.
My default file manager is pcmanfm and it worked well in 14.04 version. I have tried to change mime tipes inode directory but it is already good. I have also tried to remove from inode the audacious but still nothing.
I have tried to remove the audacious and it lead to downgarde system from lubuntu to lxde (I have lubuntu-desktop over ubuntu). After bringing back the old lib for audacious I have succseded to bring back lubuntu-desktop. The bluetooth doesnt work neither , and that bluetooth send-file. Is there something in some prefernces to change something to bring the pcmanfm well integrated with other apps? Thanks.