The author of this article makes the case that there's no longer any question of whether Linux is ready for the corporate desktop (it is), but whether corporations are ready for Linux. The author brings up some valid points, and while there are not revelations, it does counter some of the many arguments agains Linux on the desktop.
To sum up: The only area Linux may not yet be mature enough in is application and document format compatability. I reluctantly have to agree with this. While OpenOffice, as an example, may be fine for anything a company has to do from this point on, it may not be compatable with all existing documents, especially those with complicated templates, macros, etc. Reimplmenting all of these templates and macros in OpenOffice would be possible, of course, but the prospect of doing it is certainly discouraging.