All my gnutella uploads are cancelled when I use an AMD 64 bit computer (Fedora 4, any gnutella program) OR (Windows XP, any gnutella program) - firewall on or off.
Downloads and searches work fine.
All other programs (games, etc.) work fine on this computer.

When I use the same internet connection with a 32 bit computer (eg. AMD Athlon XP), uploads (and downloads) work fine.

WHAT GIVES???