OS: Debian 7 x86-64 Browser: FF 23.0 /opt/firefox/firefox: ELF 64-bit LSB executable, x86-64 /usr/lib/flashplugin-nonfree/libflashplayer.so: ELF 64-bit LSB shared object, x86-64 I'm running FireFox and open in it from 3 to 20 tabs . Earlier in this state, it can work normally for a few months - I has not turn off the computer. Now : every morning begins with the fact that I have to kill FF and run it again with the recovery session. This is due to the fact that after 20-24 hours , he can not open any page (in this case there is no problem with the network ), even in a LAN and 127.0.0.1 If I upgrading an already open tab or open a new page in the tab header shows " Connecting ... " and nothing else was going on for a long time.