What is the total file size or disk footprint of ArcGIS Desktop 9.1?

Answer

ArcGIS Desktop...........................941 MB
('Complete' install)
Desktop Developer Kit....................490 MB
Tutorial Data............................900 MB
Crystal Reports..........................692 MB
ESRI Software Library....................413 MB
ArcInfo Workstation......................735 MB
ArcGIS License Manager....................13 MB

From ESRI Data & Maps 2005 Media Kit
Data & Maps and StreetMap USA (DVD).....2.51 GB
Image Data (DVD)........................7.01 GB
Global Imagery (DVD)....................5.94 GB
StreetMap USA (CD)......................1.14 GB
United States (CD 1).....................527 MB
United States (CD 1).....................575 MB
World, Europe, Canada and Mexico (CD)....308 MB