When I open news.mozilla.org, the m.s.firefox mail box shows over 1000
messages. but when I open the m.s.firefox mailbox the list gets
truncated to 30 messages. Does any one know how to fix this?

Because of this problem I lost the answers to my mail about command
line shutdown of Firefox

When I open news.mozilla.org, I see

m.s.thunderbird 1478 34815
m.s.firefox 44824 48434
m.announce 3 16

as I open each one I get
m.s.thunderbird 1479 4171
m.s.firefox 30 31
m.announce 2 15

disk space is set to keep last 9999 messages
Thanks
Bill Krol