Its a bold move, but the responsible thing to do. If something is causing continual security risks, and increased overhead, both in user productivity and customer support costs, alternatives should be pursued. The Chronicle of Higher Education writes:

Worried about persistent security flaws in Microsoft's Internet Explorer, officials at the Pennsylvania State University system have taken the unusual step of recommending that students, professors, and staff members stop using the popular Web browser. "The threats are real, and alternatives exist," the university said in an announcement posted on its Web site this week.

The school, in this Information Technology Services Bulletin, is promoting the use of alternate browsers such as Firefox and Opera.

She cited reports that the new Firefox Web browser, for example, is much less prone than Internet Explorer to download so-called spyware, or programs surreptitiously placed on a computer in order to record confidential information such as passwords.