[horde] forced double login in horde3/imp

[Alejandro Lengua - Virtual Orbis]

Hi!
I have have just installed Horde3, but due to the fact of the several 
error messages
I was receiving from IMP about invalid IMAP servers, I copied the old 
IMP (from Horde 2.2.6)
servers.php.

Now I don´t receive any errors, I can log without problems, but I am 
forced to login twice.
First for Horde and then for IMP, what am I doing wrong?

Alejandro Lengua