Bug#519474: More information on X11 locale troubles
This seems to be due to a change in the locale.dir file. Doing grep
"fi_FI\\.UTF-8" on lenny's version (1.1.5-2) shows:
While the same command for sid (1.2-1) shows:
However, the fi_FI.UTF-8 directory does not actually exist.
This causes other kinds of funny behavior too - I noticed that sawfish
stopped displaying window titles and crashed when starting ltris.
As a workaround, set LC_CTYPE to en_US.UTF-8.