[imp] Database error in imp

[Joel Maxwell]

Hi,
I'm using imp version 2.2.6 for debian 3.0, and i get the following error 
when 
I load up the webpage in one f the severalk windows (changes every refresh):
Database error: Invalid SQL: insert into active_sessions ( sid, name, val, 
changed ) values 
('b66a9ac6026533d36129c4f3a1e31679', 'HordeSession', 
'base64:JHRoaXMtPmluID0gJyc
7ICR0aGlzLT5wdCA9IGFycmF5KCk7IA==', '20020820150444.91279200')
MySQL Error: 1062 (Duplicate entry 'HordeSession-
b66a9ac6026533d36129c4f3a1e31679' for key 1)
Session halted.

Yesterday on a faster internet connection it produces the same screen on 
almost 
evry and sometimes every frame window.

What is this and how to fix it?

-- 
Joel Maxwell,
WWHCN System Administrator
---------------------
program sig
// uses ggi, gtk, mysql;
begin
        WriteLn('Content-type: text/plain');
        WriteLn('Our social strategy is lacking but it is the future,');
        WriteLn('it is what takes us away from the caves');
end.