* Robert Heller: > This is the reason *RedHat* Enterprise Linux is never recomended to do > upgrades across major versions. The recomended practice is allways a fresh > install.
That's mostly because Red Hat does not want to support such installations of unknown genealogy. Technically, in-place upgrades for most systems work, as long as you take care of the usual offenders (e.g., Berkeley DB, as Michael pointed out, and PostgreSQL).
