Usually my G5 runs smooth as baby's behind but lately its been a bit jilted and has been freezing for a few seconds at seemingly random intervals. I don't think it's a hardware problem, Windows seems to be working ok. When I'm performing a simple task like typing in a URL or dragging a file to another location it will sometimes stop responding and give me the spinning beachball. It doesn't stop running alltogether; iTunes for instace will keep playing during this period, and I can move the mouse around etc. I notice it the most when I'm watching flash video like on youtube... the video - despite being completely loaded - will sometimes freeze and then resume a little further into the video. Very annoying. I know this is a pretty broad problem but can anyone offer any advice? I havn't really done anything to it lately apart from install a security update.