What I read on pgsql-performance and hackers makes me
pretty confident that 8.0 is as stable as 7.4. Keep in
mind that until pretty recently 8.0 was 7.5 and
given the track record of the last releases (7.3.x 7.4.x)
I would say 8.0.1 is as stable as the 7.4 series and I
seriously doubt there will be any major performance
surprises relative to OpenACS.
You are probably not going to get a lot of feedback from
people running it in production here since 5.1.x won't
work on it (small incompatibilities mostly and easily fixable if someone took the time). If you want to hear about
production users I would ask on one of the pg lists.
