Strike two. i am going to hold off until the study guide comes out. Scored 53 this time. Oh Well.
Don't give up, go through the practise test and read through the explanations of each answer. The stuff on wikipedia is very good for research, download the tools from intensified, check out Cramsessions CWNA freebie download.
I'm sorry to hear that you failed the exam again. It is an entry level exam, but it is an entry level exam to many different wireless technologies. It will be important to know them all to pass the exam. The difficulty is determining how well to know them all.
I think you will find the official study guide VERY helpful when it arrives. A lot of effort has gone into making it a resource that provides more than just memorization tables, but rather a true level of understanding. You won't be an expert on any topic, but you will really know how every technology functions and the standards they are based upon.
Good luck in the future.