Notice that 40% of the respondents are using/piloting Linux.

[link|http://www.linuxinsider.com/story/?sn=1316095&cat=linux&ln=en|
IDC Survey Shows Linux Share of IT Budget Will Grow To 9 Percent In 2002 ]
....
Key findings include the following:

-- Linux buyers are becoming more mainstream within the corporation
-- Nearly 40% of respondents are actively using or piloting Linux
-- In terms of unit replenishment, Linux is growing twice as fast as Unix
Linux advantages (performance, scalability, value) are gaining in prominence