The versions 1.7.6 for Joomla! 1.5 and 1.8.5 for Joomla! 1.6 or greater for the Kunena Birthday Module is available now. They fix a bug in the leap year calculation and update languages.

You can find them in the download area. The Joomla! 1.6 version can be updated through the Joomla! update function.

[Edit] In 1.7.6 there where debug messages activated. Please use 1.7.7 instead!