UFSC.br (Brazilian Federal university in Santa Catarina), one of the biggest universities in Brazil, is hosting SEO SPAM on almost all their departamental web sites:
http://www.sead.ufsc.br – Department for distant education
http://cco.inf.ufsc.br/ – Computer science department (using WordPress 2.2)
http://www.lec.ufsc.br/ – Engineering department
http://emc.ufsc.br – Mechanical engineering department
http://www.ndi.ufsc.br/ – Department for child development
http://www.bu.ufsc.br/ – Library department
And I could go on and on with this list. Most of them are using old versions of WordPress and Joomla, explaining how they got hacked.