Just want to add for the archive that I happened to run across what appears to be a 7-year old report of (I think) both of these vacuum/analyze bugs:
Re: [patch] BUG #15005: ANALYZE can make pg_class.reltuples inaccurate.
Re: [HACKERS] VACUUM and ANALYZE disagreeing on what reltuples means
https://www.postgresql.org/message-id/flat/6373488.29.1323717222303.JavaMail.root%40store1.zcs.ext.wpsrv.net#6373488.29.1323717222303.javamail.r...@store1.zcs.ext.wpsrv.net
