ftp_nlist problem

I have a script using some ftp functions that runs just fine on various server I have tested. Now that I've installed it om a customer's server, it ( obviously ) stopped working. claning the script to isolate the problem, I've discovered that the problem is on the ftp_nlist command that freezes the script execution for a lot ( and the machine too, like doing an heavy work ) and then returns an error ( false ). ftp_rawlist has the same problems. all the previous operations ( connect, login and chdir ) work without problems. any idea on where could I check for a solution? thank you,

      Giulio

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