Hi,
i am using fedora 12 and i have an audio problem with skype and amsn

i can hear music mp3 songs and online radio without any problem, so i suppose my audio device is working,
but when i am trying to make a call from skype or amsn i can hear but they can't hear me

from skype:
the camera is working for me and for my partner and i can hear him/her but they can't hear me

from amsn:
i can hear my partner but they can't see me and hear me and i can't see them too
any ideas how to solve these problems?

thank you a lot!