This affectes b2 and python 2.4 too.
Initially reported here:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=198971

Looking at logging/handlers.py:

Line 635:
self.encodePriority(self.facility,                    
            string.lower(record.levelname)), msg)

Line 611 in encodePriority:
priority = self.priority_names[priority]

priority_names is declared on line 527:
    priority_names = {
        "alert":    LOG_ALERT,
        "crit":     LOG_CRIT,
        ...
        "info":     LOG_INFO,
        ...

Now, if one initializes the locale (i.e. 
locale.setlocale(locale.LC_ALL, "")

and then tries to use the logging module, it will fail
with an exception looking kinda like:

  File "/usr/lib64/python2.4/logging/handlers.py", line
627, in encodePriority
    priority = self.priority_names[priority]
KeyError: 'Info'

if they choose LANG=tr_TR.UTF-8

This happens because in that particular locale,
"INFO".lower() != "info"