Apologies if this has been aired before but I can't find a reference. I'm running OS X 10.3.3 on an iMac 333Mhz with 288MB it was pretty stable tho' obviously not as speedy as a more up to date machine. It is at least faster than 10.2 and I have scrapped OS 9 as I have no use for it. I have started getting the following. The screen greys and a multilanguage notice comes up with the power button imposed in the middle and with the following message in English:- "You need to restart your computer. Hold down the Power button for several seconds or press the Restart button." Pressing the Power button has no effect but pressing Restart does. Why is it doing this? It was a one off but is now happening with greater frequency. The only thing that comes to mind is that perhaps the battery needs replacing but other than that I am toally at a loss. Some help would be appreciated.