One thin I have to mention is the successful connection of my old printer.
I have a quite old HP Deskjet 720C, which I couldn't use on my notebook running windows vista because of the lack of a parallel port so far.
This printer is a so called GDI-printer, which needs a direct connection and doesn't have an own image processing unit.
A HP Jetdirect I tried didnt' work, it produced only a few lines and then stopped printing, even when trying to print the Windows test-page
Now I bougt a cheap (1€) parallel to usb adapter, which didn't work as expected with my notebook (approx 2/3 of the Windows test-page was printed).
But when connected to the WL500GP's USB-port and used as TCP/IP printer this works perfectly! Even complex pages are printed without any problems.
I am running one of the latest firmware from googlecode and I am really glad to have this functionallity. What a great piece of software on this nice router! Thanks for your work, it keeps my printer working even after 12 years!