[imp] IMP-4.0.2 problems

[Callis Sam-Kwakwa]

Hi!
     I recently installed IMP4 on fedora 3 with dovecot. 
When i try to login, the /tmp/horde.log file reports login 
was successful but the login page is re-displayed, am not 
able to get into my inbox. Dovecot reports a successful 
login.
   Am using IMP as authentication for horde. What could i 
be doing wrong? I tried IMP-4.0.3 but it still gives the 
same result.

Any help offered is appreciated.