Shoutbox

Ok im having this problem with Personal Message.  Whenever I type a new message and log out and then next time i log in again the Personal Message is showing the old message I had and not the new one.  I also logged out, exited and then signing back on but it still shows the old message

Im using:

Windows Version: Windows XP, 5.01.2600
Messenger Client Version: 7.5.0306
Messenger Plus! Version: 3.61.0145

In Tools > Options > Security the "This is a shared computer so dont store my ..." is unchecked and so is the "This is a shared computer so dont display my tabs" is unchecked

If I enter the personal message in i press Enter.  How can i fix this problem

Thanks