Clarification for you  (and Zundark's right, i should have checked the Wikipedia bugs page first).   This is a "bug" in the code that makes wikipedia work  it just means that there is a line of code that may have an error as small as an extra space. It's analogous (in a VERY simplified way) to trying to make something bold in HTML and forgetting to put the  at the end, so you'd see something like this:

words in bold

Instead of this:

words in bold 

It's not like a virus, that is code somebody deliberately wrote in order to infect your computer and damage files, so it won't "go around." JHK