I've not seen any improvement here using:

apt-cache policy cups
cups:
  Installed: 1.3.9-17
  Candidate: 1.3.9-17

I didn't try the PPA package or make any system changes.

The original issue was failure to connect via Bluetooth so I switched to
the USB cable expecting that would solve the problem, only to meet this
new one! The printer is automatically detected upon connection and
system-config-printer appears and offers a test-page print, which then
doesn't start, with the status reporting "Printer ... may not be
connected" whilst the job shows as "processing".

uname -a
Linux hephaestion 2.6.28-11-generic #40-Ubuntu SMP Fri Apr 3 17:39:41 UTC 2009 
x86_64 GNU/Linux

lpstat -v
device for DESKJET-995C: hp:/usb/deskjet_995c?serial=MY19P1C13F0L

lpinfo -v
network socket
network beh
direct hal
direct hpfax
direct hp
network http
network ipp
network lpd
direct scsi
network smb

lsusb  -s 1:14
Bus 001 Device 014: ID 03f0:5004 Hewlett-Packard DeskJet 995c

ls -l /dev/bus/usb/*/* /dev/usb/lp* /dev/usblp*
ls: cannot access /dev/usb/lp*: No such file or directory
ls: cannot access /dev/usblp*: No such file or directory
crw-rw-r--  1 root vm 189,   0 2009-04-06 15:50 /dev/bus/usb/001/001
crw-rw-r--  1 root vm 189,   3 2009-04-06 15:50 /dev/bus/usb/001/004
crw-rw-r--  1 root vm 189,   4 2009-04-06 15:50 /dev/bus/usb/001/005
crw-rw-r--  1 root vm 189,   5 2009-04-06 16:40 /dev/bus/usb/001/006
crw-rw-r--  1 root vm 189,   6 2009-04-06 16:40 /dev/bus/usb/001/007
crw-rw-r--  1 root vm 189,   7 2009-04-06 16:40 /dev/bus/usb/001/008
crw-rw-r--  1 root vm 189,   8 2009-04-06 16:40 /dev/bus/usb/001/009
crw-rw-r--  1 root vm 189,   9 2009-04-06 16:40 /dev/bus/usb/001/010
crw-rw-r--  1 root vm 189,  10 2009-04-06 16:40 /dev/bus/usb/001/011
crw-rw-r--  1 root vm 189,  11 2009-04-06 16:40 /dev/bus/usb/001/012
crw-rw-r--  1 root vm 189,  12 2009-04-06 16:51 /dev/bus/usb/001/013
crw-rw-r--+ 1 root vm 189,  13 2009-04-06 16:40 /dev/bus/usb/001/014
crw-rw-r--+ 1 root vm 189,  14 2009-04-06 16:40 /dev/bus/usb/001/015
crw-rw-r--  1 root vm 189,  15 2009-04-06 16:40 /dev/bus/usb/001/016
crw-rw-r--  1 root vm 189, 128 2009-04-06 15:50 /dev/bus/usb/002/001
crw-rw-r--  1 root vm 189, 256 2009-04-06 15:50 /dev/bus/usb/003/001
crw-rw-r--  1 root vm 189, 384 2009-04-06 15:50 /dev/bus/usb/004/001
crw-rw-r--  1 root vm 189, 385 2009-04-06 15:50 /dev/bus/usb/004/002
crw-rw-r--  1 root vm 189, 512 2009-04-06 15:50 /dev/bus/usb/005/001

/var/log/syslog shows:

Apr  6 16:40:25 hephaestion hal_lpadmin: PPD: 
drv:///hpijs.drv/hp-deskjet_995c-hpijs.ppd; Status: 0
Apr  6 16:40:25 hephaestion hal_lpadmin: Added printer DESKJET-995C
Apr  6 16:40:33 hephaestion deskjet_995c?serial=MY19P1C13F0L: io/hpmud/musb.c 
135: unable get_string_descriptor -1: Operation not permitted 
Apr  6 16:40:33 hephaestion deskjet_995c?serial=MY19P1C13F0L: io/hpmud/musb.c 
603: invalid product id string ret=-1 
Apr  6 16:40:33 hephaestion deskjet_995c?serial=MY19P1C13F0L: io/hpmud/musb.c 
135: unable get_string_descriptor -1: Operation not permitted 
Apr  6 16:40:33 hephaestion deskjet_995c?serial=MY19P1C13F0L: io/hpmud/musb.c 
603: invalid product id string ret=-1 
Apr  6 16:40:33 hephaestion deskjet_995c?serial=MY19P1C13F0L: io/hpmud/musb.c 
1104: unable to open hp:/usb/deskjet_995c?serial=MY19P1C13F0L 
Apr  6 16:40:33 hephaestion deskjet_995c?serial=MY19P1C13F0L: prnt/backend/hp.c 
676: INFO: open device failed stat=12; will retry in 30 seconds... 
Apr  6 16:40:35 hephaestion hpijs: io/hpmud/musb.c 135: unable 
get_string_descriptor -1: Operation not permitted 
Apr  6 16:40:35 hephaestion hpijs: io/hpmud/musb.c 603: invalid product id 
string ret=-1 
Apr  6 16:40:35 hephaestion hpijs: io/hpmud/musb.c 135: unable 
get_string_descriptor -1: Operation not permitted 
Apr  6 16:40:35 hephaestion hpijs: io/hpmud/musb.c 603: invalid product id 
string ret=-1 
Apr  6 16:40:35 hephaestion hpijs: io/hpmud/musb.c 1104: unable to open 
hp:/usb/deskjet_995c?serial=MY19P1C13F0L 

/var/log/auth.log shows several rejected DBus messages, which looks
suspicious:

Apr  6 16:40:24 hephaestion dbus-daemon: Rejected send message, 1 matched 
rules; type="method_call", sender=":1.64" (uid=1000 pid=5585 
comm="/usr/lib/indicator-applet/indicator-applet --oaf-a") 
interface="org.freedesktop.DBus.Properties" member="Get" error name="(unset)" 
requested_reply=0 destination=":1.102" (uid=110 pid=7117 
comm="/usr/lib/policykit/polkit-read-auth-helper 1000 "))
Apr  6 16:40:25 hephaestion dbus-daemon: Rejected send message, 1 matched 
rules; type="method_call", sender=":1.64" (uid=1000 pid=5585 
comm="/usr/lib/indicator-applet/indicator-applet --oaf-a") 
interface="org.freedesktop.DBus.Properties" member="Get" error name="(unset)" 
requested_reply=0 destination=":1.103" (uid=0 pid=4317 comm="/usr/sbin/cupsd "))
Apr  6 16:40:25 hephaestion dbus-daemon: Rejected send message, 1 matched 
rules; type="method_call", sender=":1.64" (uid=1000 pid=5585 
comm="/usr/lib/indicator-applet/indicator-applet --oaf-a") 
interface="org.freedesktop.DBus.Properties" member="Get" error name="(unset)" 
requested_reply=0 destination=":1.104" (uid=0 pid=4317 comm="/usr/sbin/cupsd "))
Apr  6 16:40:27 hephaestion dbus-daemon: Rejected send message, 1 matched 
rules; type="method_call", sender=":1.64" (uid=1000 pid=5585 
comm="/usr/lib/indicator-applet/indicator-applet --oaf-a") 
interface="org.freedesktop.DBus.Properties" member="Get" error name="(unset)" 
requested_reply=0 destination=":1.105" (uid=1000 pid=7124 comm="python 
/usr/share/system-config-printer/system-con"))
Apr  6 16:40:33 hephaestion dbus-daemon: Rejected send message, 1 matched 
rules; type="method_call", sender=":1.64" (uid=1000 pid=5585 
comm="/usr/lib/indicator-applet/indicator-applet --oaf-a") 
interface="org.freedesktop.DBus.Properties" member="Get" error name="(unset)" 
requested_reply=0 destination=":1.106" (uid=7 pid=7132 
comm="hp:/usb/deskjet_995c?serial=MY19P1C13F0L 3 tj Test"))

-- 
Printer (HWModel Name) May Not Be Connected
https://bugs.launchpad.net/bugs/348316
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