Brother HL-2030
How to get an Brother HL-2030 printer to work under Linux!
Under Linux you won't have a problem installing the printer. If you are running a x86 architecture and you don't have problems with proprietary drivers, you can use the original brother driver from http://solutions.brother.com/linux/sol/printer/linux/lpr_drivers.html and the cups wrapper in case you wanna use cups: http://solutions.brother.com/linux/sol/printer/linux/cups_drivers.html
After installing the two packages, you can setup your printer with cups' webinterface on http://localhost:631
If you don't wanna use closed source drivers or you are not running a x86 architecture (like me), you can use the foomatic with the driver: Foomatic/hl1250
That one works perfectly, except that every now and then the print will through out a blank page.
How to get an HL-2030 to work under FreeBSD?
Unfortanetly, the printer doesn't work under FreeBSD, even though you got the same setup as under Linux. The Problem seems to be either the FreeBSD USB stack or the USB implementation of the printer (maybe, a USB to parallel converter [that's yamagi opinion]).
I hope that the new Stack, which will be introduced in FreeBSD 7.0, will fix the problem. Even a backport exists for FreeBSD 6.x at http://www.turbocat.net/~hselasky/usb4bsd/ I am too scared to change the USB Stack on my productive server, therefore I haven't tried it.
If somebody manages to get the printer to work, please contact me!