FTP limitation

I have been struggling with an issue for several months and am getting no resolution from those I am working with, on all ends.
I am trying to FTP (using WS-FTP) a text file from an FTP server to a local machine - have tried Windows XP and 7 with no differences. The file gets "truncated", chopped down to 3,260,000 bytes if it is more than that. We get the entire thing if it is less. I get no errors on either end. Anyone have any idea what might be restricting this file transmission size? I tried it from my home and it worked so I am guessing there is something network related on our front doing it, but we cannot figure it out. Any help is appreciated.

Dave

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