bubaka: about the prismheader send me some small log file by email and I will check it to see if you need prismheader or not.
If you need prismheader and you are using weplab-0.0.5 or superior you should not get any seg fault or error. What weplab version are you using
About the time required for bruteforcing a 128-bit key, it is normal. If you read README file you will find a little calculus of the amount of year required.
Perhaps you should better try an FMS if you have captured more than 1.5M packets.
PD: weplab 0.0.6 is out
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PD2: I forgot to translate "Key correcta encontrada". In english it will be "Right key found"

I haven't realized until now
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