I'm not sure if I did mention it on this blog, but I've been contracted by REINER SCT to work on a Linux driver for their CyberJack series of smart card readers for quite some time.
In the last days I've been spending quite an amount of time hunting down user-reported bugs in the driver, which is good. Sometimes it's really surprising to see in what kind of bugs stupid mistakes eventually result.
Also, I've now managed to make the driver work on x86_64, so it's working in little-endian 32 and 64bit, big endian 32bit. I have to test it on my UltraSPARC box to see whether 64bit big endian also works.