FTP Problem With Large Files

Hi,

All of a sudden I can't upload files via FTP any bigger than 8192 bytes. When I try to upload them, it jams when it's uploaded 8192 bytes of the file.

I use broadband through a router, and had this problem when I first started using it. I fixed FTP then by switching off passive mode, but now for some reason it's jamming at 8192 bytes again.

Also, if a file is smaller than 8192 bytes it jams at the end of the transfer.

Any help will be very appreciated, I really need to be able to use FTP!

Thanks,
Chris Poskitt