Problems for friends accessing my fileserver

[pcbytheway]

I really love this program, but I have some trouble with some friends. They can't access but another friend of mine can access at the same time so it isn't a firewall or a router whose blocking traffic cause he can acces it very good. I wonder what this problem is and I hope that you can help me

Thnx

[Rafi]

If you

...have some trouble with some friends...

may be you should replace them with better ones?  8O  Just kidding...

Make sure they use te right IP:port address, and that you did not limit the access  to x users or by password that they have to use correctly.