A bunch of compressed old entries on es.wiktionary.org are corrupted. For example, history entries on the Portada are corrupt from June 16 through August 11 and September 24 through October 25.

A spot-check of corrupt entries shows a byte pattern very reminiscent of a text conversion from Latin-1 to UTF-8. I need to know when this wiki was converted, and exactly what was done; are there prior backups? Is the conversion reversible? Might we have the same problem on other wikis?

-- brion vibber (brion @ pobox.com)