Have upgraded both MySQL and WordPress… hopefully nothing is too broken.
Comment pages/permalinks are currently broken, but I know how to fix that. It will require a small tweak to support the date-stamp style permalinks I like to use.
BTW I am sick of wordpress, it is too big and requires too many upgrades. My blog could almost be handled by a single page of PHP, and yet there’s about a gazillion of them in wordpress, so debugging and customizing is a super pain. If I had some time I think I would write a “Lite” version which uses the same database but isn’t full of rarely used cruft.