I have recentley built this rig (fortnight ago) and all was running fine until this evening, basicaly i was playing UIT2004 on internet and every few seconds there was a slight pause (like a jerky action), and this was not present before. I thought it may be the broadband connection (as its from a wireless link upstairs), however i played the single player game and this was the same, i cannot think what has caused this, i tried doom 3 also but this is just the same. Tne only thing i have altered was the core frequency of the cpu from 200 mhz to 215 mhz, however this has been at this setting for a few days now and was fine up until this evening?! Please help!