During October 3-9, intermittent site outages occurred when a massive OS upgrade was performed during off hours. Mandrake 2005 LE was installed on the server from a clean install base, meaning reconfiguration and reinstallation of the entire site was done.
Things that took longer than expected included:
1. Unexpected version differences in mod-auth-mysql which led to this blog being down. Strange apache errors results in the error log which were traced back to this module being the incorrect version and a new version solved the problems.
2. Upgrading to postfix and getting postfix to configure with smtp-auth (previously running sendmail).
Anyway, everything is stable now and backed up. Uptime currently about 10 days!