2.3 beta: "Token not found" during expiry

[Karl Kleinpaste]

I'm running beta-0505, and every night for the last several days, I've
gotten entries like these in my news.daily output in the expiry section:

Could not remove @05000000001A000000830000000000000000@: Token not found
Could not remove @05000000001A000000850000000000000000@: Token not found
Could not remove @0500000000220000002D0000000000000000@: Token not found
Could not remove @050000000028000000110000000000000000@: Token not found
Could not remove @0500000000290000006E0000000000000000@: Token not found
Could not remove @050000000029000000790000000000000000@: Token not found
Could not remove @050000000029000000820000000000000000@: Token not found
Could not remove @050000000029000000860000000000000000@: Token not found
Could not remove @0500000000290000008D0000000000000000@: Token not found
Could not remove @0500000000290000008F0000000000000000@: Token not found
Could not remove @050000000032000000340000000000000000@: Token not found
Could not remove @050000000033000000440000000000000000@: Token not found
Could not remove @0500000000350000001C0000000000000000@: Token not found
Could not remove @0500000000350000001D0000000000000000@: Token not found

The number of these rises slightly every day; 2 or 3 are new each day,
and the set is not cumulative (all entries are new each day).  The
message comes out of storage/interfaces.c but I have no idea what is
inducing this or why.  Any clues?

RH6.2 Linux, kernel 2.2.14, glibc 2.1.3, very small feed (via suck),
history file is only 2.5Mbytes with /remember/ 10, traditional spool
and traditional overviews.

--karl