A section of the company intranet needed some serious IA attention. Because,perhaps more than any other section of the intranet, it focuses on end user needs and tasks, I ran a 20-person card-sort to get some idea of end-user ideas on groupings and labelling of these groups. Got some useful results, turned them into a decent wireframe with our CMS, then my boss presented the results to the "section" working group.
The working group said they didn't care for a lot of the user-focused stuff and wanted to stick to a fairly "departmental" viewpoint. Although I accepted this with gritted teeth, it was still fine as we had manged to make some significant progress on the section structure. So I re-worked the wireframe (not a small job) and we re-presented the findings for the working group's approval.
Lo and behold, some of them said - "I thought the purpose of this exercise was to focus on tasks and users". This from the every people who had rejected the initial user- and task-focused structure. Sometimes I despair! Send me valium.