Well, you could try wiggling out of this one on a technicality, insisting on an article that is provably wrong in key facts and has been for more than a week, rather than one where that exact situation occurred but the article was later corrected after more than a week. But I'm sure you wouldn't do that, since that would be an artificial limitation.
So perhaps you should look at this version of an article about Colin Pitchfork, a convicted child killer: http://en.wikipedia.org/w/index.php?title=Colin_Pitchfork&oldid=141669223 . Among the other false key facts presented in the article for twenty-five days (over three weeks):
* the city and the county where the murders occurred;
* the years where they occurred;
* the existence of a third murder;
* the year of Pitchfork's confession;
* the date and year of Pitchfork's sentencing;
* the name of the initial incorrect suspect;
* the affiliation of the scientist who developed the technique that identified Pitchfork;
* how Pitchfork's ruse to defeat forensic testing failed.
That's a bit more than "spelling errors and questionable references."