[imp] mailbox

[cesar bonomi]

hello
first sorry for my english
I have this problem whit imp, I can`t see the mails in my inbox
I have install php 4.3.11 horde 2.2.8 imp 3.2.7
I login perfect in horde and I access to my mail acount but only can  
see INBOX  XX mails, when click in the inbox for see the list of  
mails the scren turn in white and only can logout.
I don`t know what happen, I check the config files but i think all is  
ok.
if somebody have idea of what happen ?
thanks you and sorry again for my bad english