I worked at Microsoft as a contractor for a year during the Windows XP Service Pack 2 days. Blaster was so bad that even bringing up a new machine at Microsoft,

I worked at Microsoft as a contractor for a year during the Windows XP Service Pack 2 days. Blaster was so bad that even bringing up a new machine at Microsoft, you had to install patches from a CD that was passed around our team. If you installed Windows while connected to the corporate network, you would see errors start to happen a few seconds after the network interface came online.