Last modified: 2007-07-24 17:12:01 UTC
Setting rvlimit with multiple titles produces <error code="rvmultpages" info="titles, pageids or a generator was used to supply multiple pages, but the limit, startid, endid, dirNewer, user, excludeuser, start, and end parameters may only be used on a single page."/> instead of up to rvlimit revisions for each title.
This is by design. See http://www.mediawiki.org/wiki/API:Query_-_Revisions.
May i ask why? I found it the hard way, when using rvlimit=1&rvdir=older