Skype App for the IPhone: A few inquiries

Since the IOS6 update came out, I have been having a few problems with the Skype app for the Iphone. First of all, sometimes when I am in a Skype call, I all of a sudden hear a lot of static, and then, the call drops. This happens repeatedly, and I know that I have a good WiFi connection and everything. Also, after I updated the Skype update this past Monday, whenever someone tries to call me, it does not ring. Is there a way to fix these problems? Thanks.