pager display and locale

[Erika Pacholleck]

How does the pager resolve the locale settings?

The funny problem looks like this (I use the german):
The date is randomly displayed wrong when it come to a diaresis.

Mär-24
M.r-24
Mär-24
M.r-24
M.r-24

If I know how the components work into it, I might find a solution.
I know, the month is soon over ;)
Thanks.
-- 
Erika