Hwel,
mac are thats its totally stable, no blue screen of death
Since the wide spead release of WinXP there has been very little problems with BSODs for the average PC user. I usually run comps over 1 month straight without rebooting, and no problems what so ever. The only reason I reboot my home computer every two hundred hours is because I am swapping hardware. After running 200 hours without problems, those components are burnt in and little chance of them failing.
Take Care,
Richard