Help with lag.

Ok so for the past 5-6 days now i been have major lag issues not FPS lag but network (like everything but my character is lagging). It has made being on Freedom sever unplayable i mean horrid lag. Now first before you say its a prob with my PC or Net Know that i play 7 other mmo's and none of them have lag at all.I can play on guardian and there is no where near as much lag but still some. It did seem to start after i did a reformat on vista but I have updated all drive and everthing also did virus scans and i have no other programs running while playing.Like i said i play 7 other mmo's and no lag i also have no prob downloading or any other network prob beside CoH. If you want to know my pc spec's it is this i just got it like a month ago http://www.newegg.com/Product/Produc...82E16883229100 I really love this game but if this lag keeps up I'm going be forced to drop my sub. sry for typeo or grammer