You would think that most service providers operating a shared hosting environment would have moved off the now 13 year old Windows 2003 product. Apparently that is not the case, Fasthosts, a fairly large hosting company, is still using 2003.
You can read about an outage they had plus a 2003 vulnerability causing them headaches at the link above.
That said, does anyone else use Windows 2003 for a shared hosting environment still?