My printer (
HP Laser Jet P1006) never works on my NAS, so I've upgraded its firmware to version
3.4.1 build 0315T.
Now I can see what tasks are in the print queue. Thank to that option I finally saw, that I'm doing everything right, but the NAS is working wrong.
I've tried both methods (described
here) and various drivers to install shared printer on Windows. Of course everything works... alright almost. Printer appears in proper window, but I couldn't print anything (even the test page). Any task after few second disappear from tasks list and nothing was printed.
Today (after reading new posts in this topic) I've installed Bonjour Service for Windows.
The difference between printing with Shared Printer and Bonjour is showed on the image below:

Printed files names are showing on the list, when I'm using Bonjour. When I'm not using it - they aren't.
But that is
almost not important.
Nothing is physically printed, but all tasks are completed.
That's the real problem...
EDIT: Nothing changes on FW 3.4.2 build 0331T
EDIT 2: Nothing changes on FW 3.4.3 build 0520T