"Phillip Smith" <phillip(dot)smith(at)weatherbeeta(dot)com(dot)au> writes:
>>> 2007-07-25 11:52:05 EST @ []DETAIL: The data directory was initialized
>>> by
>>> PostgreSQL version 8.3, which is not compatible with this version 8.2.4.
> Is it worth me trying to fix this stuff up on my behalf? Or should I just go
> back to last night's backup and recreate this morning's transactions?
If you can reinstall the server software you had yesterday, do that and
do a pg_dumpall, then install 8.2.4, initdb, reload from dump.
regards, tom lane