Folks,
The server that hosts the XML dumps will be undergoing maintenance (it's going to be moved to another rack), on Saturday Oct 1 starting at about 15:00 GMT. We expect the server to be back up by 17:00 GMT. During that time XML dumps will be unavailable.
In other news the first run of the full en.wikipedia history in chunks has completed. The recompression to 7z has not been done, nor the recompression into a single large bz2 file for people who prefer it. However, for those interested, please have a look at the files:
http://dumps.wikimedia.org/enwiki/20100904/
Each file has its own mediawiki header and footer, each covering a range of 2 million (sequential) page IDs, except for the last "chunk" which covers rather more than it should.
As you can see, the chunk sizes are rather disparate. The next such run should split up more evenly with roughly the same number of revisions in each chunk, and as such, they should all take nearly the same time to complete.
Ariel Glenn