As with every change on a board finding the functions can be difficult at best .
There have been issues with folks not knowing how to accept a friend .
Once you have recieved the invite click on your private messages under the welcome with your name there should be a spot there that says you have an invite . You can click on it there to accept or go the user cp at the top of your menu bar .
click on that go to networking . Click on contacts and friends you should be able to save it from there ....
To break a friend ship just uncheck the box next to thier name and save changes ... If I missed something on this please add to it here . The new lay out also allows folks to post up messages to that person , on thier page be aware tho this can be seen by all so keep it clean . HTH