Hi Cyrille,
désolé pour toi, c'est super vexant ce genre de crash.
cyrille henry wrote:
did anyone ever experience a slow down due to ubuntu automatic script that should run on the background? how to easily disable them? (cron?)
You could set up a runlevel for performance, that runs only the necessary daemons : udev, jack, dbus. No syslog/ssh/avahi/cron/at/cups/acpid/ftp/networkmanager/bluez/whatever... Also you can run a minimalistic X session, with screensaver/dpms/screnblanking disabled and a lightweight window manager.