http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2006/01/14/HOGCRGL75U1.DTL
In this article about a fatal wolf attack the author says he'd found records of 27 non fatal attacks.
The treehuggers go balistic whenever a wolf is implicated in an attack on humans because of the perception that this will ignite a massive wolf hunt.
There are recorded cases in France of massive wolf extermination hunts after a number of people were killed by what could have been nothing other than a wolf, the Movie "Brotherhood of the Wolf" not withstanding.
A couple of years ago when a woman was describing a near fatal attack on a child she hurried said "it must have been half dog because wolves never attack people".
Wolves don't normally hunt man for a number of reasons. Top of the list is that Primates of any sort are not native to this continent, another is that Omnivores are the Wolve's most dangerous competitor. We smell just enough like a bear, due to our diet,to set off a warning signal.
Wolves are also very unlikely to encounter an un armed man in the forests. Even nature photographers carry enough odd smelling metalic objects to trigger a warning to stay away. Wolves don't like metal, it spells danger.
When a man is far enough from civilization to fall prey to a hungry wolf pack, all thats left is red snow if that.
Reports of finds of human remains after a Wolf feeding frensey have at most consisted of the gnawed skull and occasionally the entrails, with no bones or bone fragments left to show tooth marks.
That said, wolves are highly unlikely to attack an armed, healthy, confident man.
Dogs aren't particularly interested in killing people either, the difference is you are hundreds of thousands of times more likely to encounter a dog in day to day activities than you are to encounter a wolf.
PS
The mass wolf attacks of Medieval times have been blamed on the wars of the day. Wolves that fed on corpses soon found that a greiviously wounded man was easy prey. They then developed a taste for easy kills and graduated to unarmed peasants.
Its said they even invaded Paris by traveling through the sewer opening on the frozen Seine River and broke into churches by finding openings in under ground crypts.