I tried running hald in verbose mode with "hald --daemon=yes --verbose=yes --use-syslog", but no messages from hald appear in /var/log/syslog at the same time as the freeze. There are plenty of messages when hald starts up, but then it's silent when the freeze actually happens.
-- Hard disk I/O randomly freezes when hald is running and optical drive is empty https://launchpad.net/bugs/84603 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs