Here we see the regression of Windows XP over a period of time:

Day 0: DavidP installs Windows XP

Day 1: Windows XP runs with great efficiency and reliability

Day 30: Continues to run well

Day 100: David is very happy with Windows XP

Day 150: Hard drive space problems begin to occurr, continuing from Windows 9x days.

Day 200: David sees his very first BSOD in XP...David is scared...but still happy with performance of XP

Day 250: David's internet fails and must be reinstalled. David sad.

Day 300: Hard drive problems become severe. David makes temporary fixes, but continues to get worse. David still happy he made switch from 9x to XP, but not as happy as he was.

Day 350: Major internet failures. Internet software must be reinstalled 7 times in 4 days. Internet Explorer and Windows Explorer crash afterwards, and still refuse to run. Hard drive space problems severe. David is angry with XP.

Day 365: Christmas day...10 days from now. Family gets new computer. David gets new computer parts. David gets families old computer. David replaces old parts with new parts. David formats hard drive, which he has been waiting to do for some time now. David has 2 spare motherboards now . David will be a happy man.