I have used Microsoft Network Monitor 3.4 in Windows 7 to create a capture file from my wireless g network by setting monitor mode.
When loaded into Wireshark I can see the four way handshake and I can enter the password into keys toolbar but all the packets that look like data are "Qos Data" and I can see no obvious text(see below).
I can decrypt the Wireshark test encrypted session.
What I really want to know is if the packets are being decrypted successfully in Wireshark and there just are no data packets captured.
The data capture session started with me disconnecting the target device and reconnecting then surfing to wikipedia and clicking through articles trying to generate a lot of "text".
Fiddling with the Wireshark IEEE 802.11 options only made the "Qos data" packets change protocol to LLC.
FYI I have a long and complex password/phrase, but all ascii characters.