Windows 7: Windows Live Messenger using Excessive RAM Amounts

hey guys, first up system specs

AMD Phenom 2 955 Black Edition 3.2Ghz ( everything is stock speed )
DDR3 G.Skill X Series Ripjaw Gaming Ram 1333Mhz dual kit 2x4GB
some asus motherboard
WD Green HDD 1TB
2x 500GB WD Blue
750W PSU
Gefore 460GTX Gigabyte SE 1GB

Ok basically. today msn felt sluggish and choppy, which it never has before. this happened a phew days after a recent change, i moved one of my ram sticks to another slot due to it contacting with my massive CPU Red Scorpion Heatsink. i was concerned about damage overtime from the contact

This caused the ram to be single and not dual. now im not sure if its the issue, but i triple tested my ram with memtest, and linux programs, i had no issues and no hardware issues all around the board that i can see



And today i checked and wlcomm.exe*32 was using 332MB of ram usage with 40% CPU usage. its never been above 40, and MSN itself was using 70MB

I ran a malware antibytes ( sorry i forgot to save the log x.x ) and it found one trojan virus, but the problem still seems to popup