Failed twice; last attempt?!; take a class?!

in Security+
I just took the exam for the second time; scored a 645. I failed it again. The first time (August 200
I scored a 615. I used the Exam Force materials and several text books. I am not saying the materials did not help. I have been in IT since 1999. I have been a network admin since 2003. I know access control and certificates tripped me up. But there were questions the study materials did not cover. :-0 I normally don't attempt cert exams after failing twice. I missed MS Access 2003 twice. Never bother with it again. However, I want to get this one under my belt. I am considering taking a the Security+ class at Microtrain. After six months of self study, maybe there are some concepts I just can't get one my own.
I appreciate any comments.

I appreciate any comments.
~ Sean
Comments
MCSA:M, MCSE:S
(MS 270,290,291,293,294,298,299)
MS Exchange 2003 (70-284)
MCTS: Server 2K8 Virtualization(70-652 & 70-403)
i heard transcender practice exams are good
don't give up, I'm sure u can
Keep trying. It is a good one to "get under the belt". I have tried twice, and I am going to hit it again soon.
I see great value in taking some time to really let this stuff soak in. CompTIA approaches these subjects in such general ways, that the questions can be misleading at times. But, I guess that this really does fulfill the non-vendor-specific intention.
You basically have the same study resources that I have, and this time, I have also gone through some Cisco materials to understand security in the "Cisco frame of mind". They have ways of tying things down very tight.
Good luck next time. Maybe we can both post a passing thread soon.
And also, Read, Read and Read until you dream Security+
At this level I think after you studied Sybex and Syngress and after doing the exams twice, the training will not help you.
Studying this exam changed my mind a lot about security. Keep doing.
It is your personal IPS to stop the attack.