NCFTPD error large file on x64 6.06LTS

[prodsacnetworking]

Hi, I'm unable to download large files from ftp.

The ftp server is: NCFTPD.

My server is:

Version:
istributor ID: Ubuntu
Description: Ubuntu 6.06.2 LTS
Release: 6.06
Codename: dapper
Linux morpheus 2.6.15-55-amd64-server #1 SMP Tue Dec 1 18:31:51 UTC 2009 x86_64 GNU/Linux

when I download, it gives an 131 error unknown.

I tried the same file on a 32 b server, same version of all except 32 instead of x64.

any ideas?

[prodsacnetworking]

it's an known problem with the x64 version.

add:

sendfile-io=no

in the general.cf