Why are the feeds empty?

Why are the feeds empty?

Dear readers,

WHEN I add a new item into the feeds  I do not see the message that I have written in my own feed
BUT  My colleague #1 sees the message
AND My colleague #2 DOES NOT see the message


WHEN Colleague #1 adds a new item into his feed  I do not see the message he has written
BUT  My colleague #1 sees the message
AND My colleague #2 DOES NOT see the message


Who can help us debug the issue

Abdelkrim BOUJRAF
http://www.amia-systems.com