WordPress announced an upgrade of their blog software the other day. WordPress is the software that hosts this site.
The last “big” upgrade was tricky – enough changed so that a few things stopped working.
This one wasn’t too bad. The WordPress site claimed that most things should be compatible with this upgrade, and that seems to be true.
One of the improvements to this software was to add a “Secret Key” to the configuration. This secret key is supposed to provide site-specific secret entropy for salting various bits of information stored in the harder-to-protect database (like passwords). The key value appeared in the previous version of WordPress and I’d missed the step to update it. I was a little apprehensive that it might break things when I changed it, but it hasn’t been a problem.
Nevertheless, to be safe I’ve reinstalled my passwords.
Smatters 
Upgrade of my ‘professional’ web site, on the other hand, was a disaster. I failed to disable all the plugins, and a couple went unstable when I tried to bring the site back up. The visual result was that my pages came up blank, except for the admin pages. It took an entire evening (about 6 hours) of fiddling to bring the site reliably back on line and finish the upgrade.