Time to start from scratch. <div class="gmail_quote">On Thu, Apr 1, 2010 at 7:46 AM, Quin Wills <<a href="mailto:quin.wills@simugen-global.com">quin.wills@simugen-global.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hi I've one of the Dell XPS M1330 machines that come shipped with Hardy LTS (Dual Core T7300 2GHz/800Mhz 4MB Cache, 2GB RAM). I've had it for a year and use it for scientific computing. As of about 2 weeks ago I notice that the my youtube and BBC iplayer playback started becoming jerky after a few minutes into any video. I've not made any software changes recently. I ran the usual DELL hardware checks and reinstalled my flash plugins, without improvement. My laptop began freezing, including with standard applications like openoffice or when running a CPU intensive job during analysis (I code in R). So the problem appears to be my CPUs and I've confirmed, using the system monitor, that they rapidly hit 100% before my laptop freezes. I see there are some CPU tests out there, but have never tinkered/tested with any CPUs before. I prize this machine (a lot) and have heard horror stories around naive CPU testing. This has become a real problem for me - I use this machine 10+ hours a day - so any advice on what I should do next (explained to me like I'm an idiot) and what the problem is likely to be would be very, very, very welcome! Thanks a stack, Quin -- ubuntu-users mailing list <a href="mailto:ubuntu-users@lists.ubuntu.com">ubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-users</a> </blockquote></div>