Wikipedia vandalism

[mbireland]

How do I stop somebody vandalising a Wikipedia site? I have seen some of the pages on there are protected, there is however somebody who persistently changes the page in an almost libellous fashion.

Does anyone know what I can do.

Thanks in anticipation.

[Buenchico]

This doesn't exactly impress me as the most user-friendly set of instructions I've seen on the internet, but I think the information you require is here:
http://en.wikipedia.org/wiki/Wikipedia:Request s_for_page_protection

Chris