Solve printing issues with Airport

Since one year, I have printing problems with my HP5100 plugged via the USB port of my Airport Extreme: printing is amazingly slow and usually freeze when 50% of the work is done. Many users have reported similar issues with Airport station.
While I was browsing Apple forum (http://discussions.info.apple.com/.68b5895d/3), one member was reporting THE solution to my problems:
First go to this page http://www.linuxprinting.org/macosx/hpijs/ and download both software :
- hpijs-foomatic-2.0.2.ppc.dmg
- espgs-7.07.1.ppc.dmg
Install them.
Launch "system preferences"-> "Printer and Fax"
Add a new printer and select "Printer IP"
Select the protocol "HP JET DIRECT - Socket"
Enter Airport station IP address
Queue: leave blank
Name: give a name you want
Location: Airport Extreme (or the location you want)
Print using: HP (or other depending on your printer)
Select model: from the list
Then click "Add" and it is done.
Your printer will never freeze anymore