Surprising sources of malware

[Joe Presto]

I responsed to a customer's virus alert the other day and found that a site from GlaxoSmithKline, www.quit.com (http://www.quit.com), was prompting to install "coupon manager," which, if not spyware, is at least a process that is not desirable.

Does anyone have any other examples of malware coming from fairly reputable sources?

Thanks - Joe