Le 04-09-20, à 3:51 am, Angus Wallace a écrit : > and the system will go unresponsive. It hasn't crashed, > because every 10 seconds, iTunes will play several seconds of music, > and then > stop again). The only solution seems to be to force reboot: > (<ctrl><apple><power>). I had exactly this problem last spring. Doing Command-Q as soon as it started eventually allowed me to get back to normal state, and I did reboots just to be on the safe side. This was very annoying. If I remeber correctly, there wasn't a special combinaison of software -other than iTunes- that started this "bug". It stopped after a few weeks after (if I remeber correctly again) doing some system update. But your system is already up-to-date ! I guess you already tried repairing permissions. Do you have an external HD? I'm pretty sure your HD -is- ok. It's really software related and iTunes is one of the suspects. Good luck Alex