PostgreSQL 8.3 released
Check the feature list:
And the release notes:
For curiosity from the release notes:
Concurrent large sequential scans can now share disk reads (Jeff Davis)
This is accomplished by starting the new sequential scan in the middle of the table (where another sequential scan is already in-progress) and wrapping around to the beginning to finish. This can affect the order of returned rows in a query that does not specify ORDER BY. The synchronize_seqscans configuration parameter can be used to disable this if necessary.
Contributed by Rocael Hernández Rizzardini