I bought a Lexmark X2670 printer/scanner device today.
I downloaded their Debian Linux driver from Internet. When trying to install, it was firing an error message that CUPS 1.2 or above is necessary despite I have CUPS 1.4.1. After some magic with the source it was installed. (Don’t ask me, search it in Internet, because I forgot where it was written. If you successfully install it, write a comment here about how to do it.)
But my Linux (version 2.6.32-3-686) has crashed twice today. I suspect that the driver is buggy.
Yes, I sent Lexmark a letter asking to make their driver open source.