[imp] problem downloading attachments

[FBN]

Hi,

I'm using OpenBSD 3.7, Horde 3.0.4, IMP 4.0.3 and PHP 5.0.4
Everything works fine, but i have the following problem:

The attachment size, mime type and name is reported correctly
in IMP, but when I download it, their size is 0KB. I can't
download any attachment file.