Hey, my printer isn't listed on this page (http://www.sane-project.org/sane-mfgs.html#Z-LEXMARK) and the sane scanner driver is working!
I've got a Lexmark Interpret S405 and the printer is connected via wlan (local eth0). I installed the lexmark software on my ubuntu 11.10 started sane and click start scan. The printer starts scanning with a max dpi of 600. I used the xsane program. May you should add the lexmark printer to your list. networkscanning may only work by installing the lexware software before. good job! soo long, bye!
