Error messages adding an HP PSC1200 printer

[erasmix]

Hello,

I get the following messages on /dev/log/messages when adding a printer:


Jan 13 13:39:46 neo kernel: usb 3-2: new full speed USB device using uhci_hcd and address 3
Jan 13 13:39:46 neo kernel: usb 3-2: configuration #1 chosen from 1 choice
Jan 13 13:39:46 neo kernel: usblp0: USB Bidirectional printer dev 3 if 1 alt 0 proto 2 vid 0x03F0 pid 0x2F11
Jan 13 13:39:50 neo python: hp-probe[15080]: warning: No devices found on the 'usb' bus. If this isn't the result you are expecting,
Jan 13 13:39:50 neo python: hp-probe[15080]: warning: check to make sure your devices are properly connected and powered on.
Jan 13 13:40:06 neo hal_lpadmin: Added printer psc_1200_series
Jan 13 13:40:08 neo python: hp-probe[15102]: warning: No devices found on the 'usb' bus. If this isn't the result you are expecting,
Jan 13 13:40:08 neo python: hp-probe[15102]: warning: check to make sure your devices are properly connected and powered on.
Jan 13 13:40:24 neo hp: io/hpmud/musb.c 1880: invalid product id string: Operation not permitted
Jan 13 13:40:24 neo hp: io/hpmud/musb.c 1885: invalid serial id string: Operation not permitted
Jan 13 13:40:25 neo kernel: ppdev: user-space parallel port driver
Jan 13 13:40:25 neo python: io/hpmud/musb.c 1880: invalid product id string: Operation not permitted
Jan 13 13:40:25 neo python: io/hpmud/musb.c 1885: invalid serial id string: Operation not permitted
Jan 13 13:40:25 neo kernel: lp0: using parport0 (interrupt-driven).
Jan 13 13:40:25 neo kernel: lp0: console ready

The weird thing is that the printer seems to work OK. I'm able to print, but I'm just curious what these messages are.