Comment 3 for bug 1417263

FWIW: the "Read-only file system" error occured again. See below.

Nothing special in dmesg nor /var/log/syslog

sander@superstream:~$ pwd
/home/sander

sander@superstream:~$ touch blabla
touch: cannot touch ‘blabla’: Read-only file system

sander@superstream:~$ mount
/dev/mmcblk0p5 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/cgroup type tmpfs (rw)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /sys/firmware/efi/efivars type efivarfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755)
none on /sys/fs/pstore type pstore (rw)
/dev/mmcblk0p1 on /boot/efi type vfat (rw)
systemd on /sys/fs/cgroup/systemd type cgroup (rw,noexec,nosuid,nodev,none,name=systemd)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,user=sander)
/dev/mmcblk0p4 on /media/sander/Images type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)
/dev/mmcblk0p3 on /media/sander/Windows type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)

mount: warning: /etc/mtab is not writable (e.g. read-only filesystem).
       It's possible that information reported by mount(8) is not
       up to date. For actual information about system mount points
       check the /proc/mounts file.

sander@superstream:~$