According to http://download.wikimedia.org/enwiki/20100130/ , the pages-meta-history.xml.bz2 file for that dump is 280.3 Gbytes in size.
In the http://download.wikimedia.org/enwiki/20100312/ dump, the corresponding file is only 178.7 Gbytes.
Is this the result of better compression, or has something gone wrong?
Kind regards,
Neil