The pace of improvements to Joomla 1.5 seems to be quickening this summer, as we're seeing new versions in weeks now.
The latest is Joomla! 1.5.5 [Mamni]. The Joomla Project refers to it as a "quick turnaround release to address the Duplicate Title error from 1.5.4
This release also contains "important SEF URL improvements and fixes for com_content in addition to a number of bug fixes and improvements."
Be sure to upgrade today, especially if you upgraded to version 1.5.4.
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