Jeff Amiel <becauseimjeff(at)yahoo(dot)com> writes:
> New one yesterday.
> Jun  7 15:05:01 db-1 postgres[9334]: [ID 748848 local0.crit] [3989781-1] 2010-06-07 15:05:01.087 CDT    9334PANIC:  right sibling 169 of block 168 is not next child of 249 in index "sl_seqlog_idx"
In your original report you mentioned that the next autovacuum attempt
on the same table succeeded without incident.  Has that been true each
time?  I wonder whether this is some transient state, rather than actual
corruption that you need to REINDEX to recover from.
			regards, tom lane