I just noticed that setting log_rotation_age to a value larger than 24
days results in rather weird output (I have not actually tested yet if
that affects the functionality too or just the output):
test=# show log_rotation_age;
log_rotation_age
------------------
-2134967296ms
(1 row)
this is a 64bit build of 8.3.3 on Debian/Linux.
Stefan