I've been trying to send a file to a friend all day. I used to use IRC and never had a problem sending. I can recieve files without a problem. Two of my friends can send files to each other without a problem, but I can not seem to DCC chat or DCC send to them at ALL.

Can anyone tell me why this might be and how to fix it?

If I load up two copies of IRC, I can DCC to myself with NO problems.