I know a few people that have seriously knackered their cars in the snow. Mainly gearbox and cv joints, though I killed the diff on a brand new Astra diesel (and I thought diesel boxes were strong!)
I have popped 2 gearboxes on my old mini in the snow (never learn) written off a new Laguna by hitting a curb mid slide (not intentional and the car just collapsed under a very slight bump, fecking impact zones!), gone backwards through a hedge in my old pickup (RWD) and been stuck in a car park at the bottom of a hill cos I had turned the whole place into an ice rink!
AAAAAAAAAAA the joys of snow driving, one day Ill grow up! (hopefully a long time from now!)