PHP警告：ftp_get（）[function.ftp-get]：2.262秒（此处测量），每秒1.15 MB

I created an import script that imports a file. After several minutes, and each time, I get this warning:

Warning: ftp_get() [function.ftp-get]: 2.262 seconds (measured here), 1.15 Mbytes per second

All files produce the same warning. I am running this script on the serverside. Is there anyone who has had this error? Here is the line of code that produces the warning.

ftp_get($conn_id,'data/'.$newFileName, $file, FTP_BINARY);

Same warning occurs when I use FTP_ASCII instead of FTP_BINARY

My Server:   Linux
PHP version: 5.2.6-1+lenny9 
Apache:      Apache 2.0 Handler

My htaccess:

php_value post_max_size 55M
php_value upload_max_filesize 54M
php_value memory_limit 55M

What does that warning mean?