I've recently installed two wordpress blogs for some german sites. Even if I install the german language pack and a german theme I don't get the dates on german.
I now edited the function which displays the time and set it manually to strftime for use with set_locale an the right locale.
I wondered why the function which displays the date on the serveral site doesn't ueses the strftime funtion. This function easily could be used for serveral formattings...