[imp] attachment problem with IE

[Francesco Consumi]

 >
> Did you try disabling page compression, if noone suggested this so far?
>

I've just tried to disable page compression.
same thing: the attachments haven't been attached to email.
only one e-mail of three in "sent mail" folder has its own attachment.
This happens only with IE.
there isn't any error in /tmp/horde.log or in syslog

thanks for past and further help.. :-)