[imp] Unable to add attachment in IMP4

[Franck MAHE]

Hi,

I just upgrade my Horde & IMP configuration to :

- Horde 3.0.3
- IMP 4.0.1

Here are my php configuration for upload (It works for other applications)

file_uploads = On
upload_tmp_dir = /tmp
upload_max_filesize = 10M

Here are the pear packages installed on my system

Package        Version State
Archive_Tar    1.3.0   stable
Console_Getopt 1.2     stable
DB             1.7.4   stable
HTTP           1.3.5   stable
HTTP_Upload    0.9.1   stable
Log            1.8.7   stable
Mail           1.1.4   stable
Mail_Mime      1.2.1   stable
Net_SMTP       1.2.6   stable
Net_Socket     1.0.6   stable
PEAR           1.3.5   stable
SQLite         1.0.3   stable
XML_Parser     1.2.5   stable
XML_RPC        1.2.2   stable

When I try to attach a document, I have the following message :
File uploads not supported.

Any clue for me. I searched on the FAQ, ... and I didn't find any information.

Thanks

Franck