I've been having the same issue and am now waiting to see if purging php5-apcu helps.
When apache stops responding, it has maxed out on threads and I get this message in error.log: [mpm_prefork:error] [pid 7628] AH00161: server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting I also have seen a apc related error: PHP Warning: apc_store(): GC cache entry 'oc558dd98d33/AutoloaderOC_User_Interface' was on gc-list for 3602 seconds in /var/www/owncloud/lib/private/memcache/apc.php on line 21 Killing a few threads allowed me to get to /server-status on the server which showed the threads were all in "Sending Reply" states responding to owncloud/status.php requests. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1422484 Title: Apache hangs/crash while running OwnCloud 8.0.0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/php-apcu/+bug/1422484/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
