[imp] chunked transfer-coding

[aps.iw@mail.way.com.ar]

Hello,
I have problems with attachments uploads, and I think that is the HTTP/1.1
because when I send a very small file it arrives ok, but when I send a
normal file (100 kb) I recieve a piece of the file.
What can I do?
I have PHP 4 the last version, Apache 1.3.26 and IMP 3.1
Where is the problem? I have read the rfc of HTTP/1.1 and it says that if
you uses HTTP/1.1 you need have applications that decode chunked
transfer-coding.
Are IMP and PHP able to manage this?

TIA