I am using ADC in both PCs, and each one has its own internet connection (two ISP). So they connect to the internet through different routers, meaning they have different ext. IPs. However they can communicate through the internal LAN with ip range 192.168.2.x.
The hub I have in the LAN is listening on ip 192.168.2.5, and as I said earlier, both pcs are connected to this hub, and can download file lists from each other.
If I understood right, Partial file sharing should automatically work if you have multisource function on, just like I do, but if I search for alternative sources for the file I'm downloading, none of the PCs finds each other as a source (partial source).
BTW, I tried downloading some files from each PC after downloading the filelists, and it worked just like its supposed to. The problem is only in the partial file sharing thing.
Any ideas? :)