Performance decreased on F18 KDE Spin boot

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http://forums.fedoraforum.org – Hello everyone, I've installed Fedora 18 KDE Spin on my laptop. I was experimenting a increased boot time process on F18 than F17 respectively. My laptop takes 50s to boot or sometimes takes a bit more, and Fedora 17 does not happen it. Takes 30s or less to boot it, I don't know what happen generally on system. How to reduce this? $ uname -a Linux localhost.localdomain 3.7.2-204.fc18.x86_64 #1 SMP Wed Jan 16 16:22:52 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux dmesg: http://fpaste.org/opKC/ (HowTos)