If you find that it always half of what you have entered it means the following:
You are not accepting incoming connections even though you are set to.

This may be because of incorrect setttings or firewall like conditions. Assuming you are firewalled you should uncheck allow incoming (this will make all 10 of 10 connect). When you allow incoming Gnotella reserves space for people to connect to you. This is to make a more stable network where incoming connections are always available to new comers. If you are firewalled you should also have that checked in the configuration/connection window and also check off ignore unreachable peers in the download screen of the config window. If you think you should be able to accept incoming connections, let me know and we can work on that.

Shaun