We've seen that before Tomkin, viz Windows 95, problems corrected in W98, the ME rubbish, but its problems largely corrected in 2000 and XP. Then Vista, and its problems (hopefully) corrected in Windows 7. Had they slowed down development we should have had 3 decent systgems, ie. Windows 98, Windows 2000 and XP,saving a lot of stress sorting out the duff systems, though of course profits would have been down for the suppliers. This is largely why I have looked at Linux systems.