I noticed a small bug today in my calendar that it seems a few people have fallen victim to recently. The month of December was being linked to in the archives as 'decg' instead of 'dec'. Looks like I fat fingered it and that mistake propagated itself into several different files. Should be fixed. Please mail me if you find any other broken links—my email address is at the bottom of the page, obfuscated against spam.
I've also noticed that someone from Japan has been giving what look like relative paths to my trackback script. Not funny.