/usr/lib/cups/backend/socket failed

[Leon Stringer]

> >I upgraded from CUPS 1.1.19 to 1.2.10 last week. Since then I've been called to non-printing printers and found that the status in the CUPS web interface is "stopped" with the message:
> >
> >   /usr/lib/cups/backend/socket failed
> >
> Have you checked permissions on all cups directories? That was the
> problem I had when I was getting that error.
>

Thanks for your reply. The permissions look right. And I'd expect a permissions issue to be consistent rather than intermittent?

# ls -l /usr/lib/cups
total 28
drwxr-xr-x    2 root     root         4096 Mar 31 16:16 backend
drwxr-xr-x    2 root     root         4096 Mar 31 16:16 cgi-bin
drwxr-xr-x    2 root     root         4096 Mar 31 16:16 daemon
drwxr-xr-x    2 root     root         4096 Mar 31 16:12 driver
drwxr-xr-x    2 root     root         4096 Mar 31 16:16 filter
drwxr-xr-x    2 root     root         4096 Mar 31 16:16 monitor
drwxr-xr-x    2 root     root         4096 Mar 31 16:16 notifier