I've read about switchover here:
http://slony.info/documentation/failover.html and it all makes sense.
But I've also read that running Slony between two machines with
different Postgresql version and different Slony versions is
problematic.

Let's say I have Postgresql 8.0.7 with Slony 1.1.5 (which I have) on a
two node setup and I want to migrate to a spanking new server with the
latest Postgresql with Slony, and let's say I want to use Slony beyond
the migration.

Can I run mismatched versions for the migration?

What are the implications?

Thanks, this list is great, and Slony is great.

- Don Barthel