Persistent is buggy and often does not last after reboot, but defintely try as Larry stated.
This process will work:
Drag this file
Swatches flyout Menu >> Open Swatch Library >> USER DEFINED >> (choose the swatch library you dropped there)
Make this library persistent, save workspace (incase your prefs get reset in future), quit, restart illustrator.
Larry, the persistent was checked, but that hasn't helped either, already since CS1.
Mike, you're suggestion seems to have done the trick, at least for now. Thanks a lot!
Glad to help, and that you were able to follow the instructions. Will work until the next Illustrator update.