[ubuntu] Extra RAM install Question - Slightly Buggy?

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http://ubuntuforums.org – Howdy folks, This weekend I added a wireless network card (TP-LINK PCI 300 mbs Adapter)and two extra sticks of RAM (Crucial, 2GB 240-PIN DIMM 256MX64 DDR3PC3-8500 UNBUFF)to my Desktop. The Desktop is a custom build (Note-my friend built it for me while i watched), but I only recently installed Ubuntu [12.04] on it (I've been using Ubuntu solely on my laptop since December, but had Windows on Desktop previously). The motherboard is an Intel Desktop Board DX58SO with an Intel Core i7 processor and an XFX ATI graphics card. I installed the wifi card and the two sticks of Ram; while the wif (Hardware)