Looking at the different dumps, no pages-logging.xml.bz2 http://download.wikimedia.org/eswiki/20090504/eswiki-20090504-pages-logging.xml.bz2 seems to be right. All of them are 14 bytes, the compression of an empty file. However, there're quite big files logging.xml.gz http://download.wikimedia.org/eswiki/20090504/eswiki-20090504-logging.xml.gz at the 'Creating split stub dumps' section.

Are those logging.xml.gz http://download.wikimedia.org/eswiki/20090504/eswiki-20090504-logging.xml.gz files really stubs (what's missing?) or they're just misplaced? Should pages-logging.xml.bz2 contain something different?

I suspect that the proper file is the gz and the existance of the bz2 are a mistake, but the xml logging files are quite new, and not too documented, so can't be sure.