Thanks for the reply.
1. I dont know what you mean by AP isolation, could you expand please?
2. Thats what I thought, but I then decided it was probably due to Monitor mode not working correctly.
As I understand it you cant just join a network and fireup wireshark, the interface will ignore all traffic apart from broadcast and unicast for its IP. (correct me if I am wrong)
I will try and specify the channel its on.
3. Its on my desktop, yup I was just running the one network card and was ensuring that was the one I was using in wireshark, it was in my list as mon0.
Cheers