Ok Y'all. I think I have a solution. I think what is happening is that if you have 2 apps (one Skype app on the iPhone and 1 on the iPad) both are pulling for rescourses. I deleted the app on my iPhone and then had no problem. They can hear me again. I think if u have 2 Skype apps on the SAME NETWORK, this will happen. I think this will only work if each of your devises are on separate networks.
Last night I was working with Skype on my iPad 2 & my boyfriend's laptop to figure out why I could hear him but he couldn't hear me. On his laptop, in Skype, I went under Tools/Options/Audio Settings, from there he can change his microphone volume is that I can hear him.... Plus he has the option to listen to me through "Independent Headphones" OR "Speakers/Headphones". Once I selected Speakers/Headphones he was able to hear me on my iPad. Our problem solved. I can't wait to try it out, since he's working out of town for 2 weeks. Hope this helps a few of you out there.