[imp] Horde auth looping

[Argon7 List User]

some months ago a similar problem has been reported but no solution
appears in the thread:
http://lists.horde.org/archives/imp/Week-of-Mon-20031124/035721.html

i'm running horde2.2/imp3.2.3 on a debian woody box, 
horde/test.php and horde/imp/test.php are fine (even imap login is ok
and gives me the number of mails in the mailbox)
but each time i try to log in imp thru the login screen, apache hangs
and starts eating process resource (up to 99,6%)... and continues to
loop until it reaches its time-out value...

can someone help me?

tx

jo
:o(