Created attachment 51341 [details]
Example

Version:           unspecified (using KDE 4.5.0) 
OS:                Linux

In clock of panel date is correct („Rugsėjo 5, S“), but if I hover mouse on it, appears notification with incorrect date „2010 m. Rugsėjis 5 d.“! It may would be the same meaning if you see in English „2010 of September. Day of 5“.
Because in Lithuanian language the last letters of month changes accordingly the context. „Rugsėjis“ would be correct, if it is used separately.

You may want to try this:
LANG=lt_LT
date -d "2010-09-05 12:34:56"  +%c


Reproducible: Always

Steps to Reproduce:
1. change lokale to Lithuanian
2. Go with mouse on clock

Actual Results:  
Incorrect long date format:
„2010 m. Rugsėjis 5 d.“

Expected Results:  
2010 m. rugsėjo 5 d.