[Internet] Has google search slowed down or is my OS having problems?

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http://www.kubuntuforums.net – I have a new build. It is very fast with lots of memory and 8 cores to my processor. Additionally, I am now running Kubuntu 13.04, so I can not be sure my problem is not beta related, but with 16GB of DDR3 1866 RAM, and an 8 core processor, everything updated and upgraded, it takes forever for a site to ope in any of my browsers. Additionally, my mouse slows from time to time. I keep wondering if it relates to nepomuk, but don't know to check that. I do know that I allow 1GB of memory dedicated to Nepomuk, so I can't figure out why my roaring fast computer is so sluggish. Any help would (HowTos)