I bit the bullet and upgraded my installation of WordPress. Now, instead of my aging WordPress 1.3 CVS, I have version 1.5.2.
The previous installation was heavily modified at all levels. Because of this, a conventional upgrade was not possible. Suffice it to say I've lost a few custom features. This blog has changed significantly, and I'll be working to restore lost functionality over the next few days and weeks.
Progress, they call it.