If the "Discussion Changes" is turned on on the Timeline, the following error will occur:
Discussion changes event provider (DiscussionTimeline) failed:
ProgrammingError: column "forum.name" must appear in the GROUP BY clause or be used in an aggregate function
The log file from Postgres looks like this:
ERROR: column "forum.name" must appear in the GROUP BY clause or be used in an aggregate function
STATEMENT: SELECT t.id, t.subject, t.author, t.time, t.forum, f.name FROM topic t LEFT JOIN (SELECT name, id FROM forum GROUP BY id) f ON t.forum = f.id WHERE time BETWEEN 1168959599.0 AND 1171637999.0
I am using Trac 0.10.3, Postgres 8.2.1
