Weird message when starting up tin

All of a sudden I started getting a weird message when starting
up tin:  "1 postponed article, reuse with ^O..."

I can still run tin normally, but this slows down the startup of
the program.

I can't find anything odd in my .newsrc file, and to my knowledge,
I didn't abort a tin session in an unusual way recently.

Anyone know what this means?

Thanks,
Joyce