'month name' missing from last calendar month

EDIT: solved, thanks everyone!

if you can see here:

http://users.livejournal.com/yumiko_/calendar/

the month name is missing from ALL the last calendar months on every year .. so december at the bottom of each year page is just '2006' instead of 'december 2006' or 'december 2004', etc .. how do I fix that?

thanks. ;)

[my viewable layer ID: [#7075172] ]