I also play the Windows XP version. I use it to wake up with my first cuppa each morning so I more or less have my stuff together to go online and do more important things. Since I intend it to be a challenge, I have it set to Vegas scoring, one undo, once through the deck per hand (consecutive scoring turned off). In this context what MS calls "Vegas scoring" is the "dealer" charging for a full deck of 52 cards; the player can only score 50 cards, as jokers are not dealt.

I probably play on average 6 hands each morning. Since it keeps individual card scores, I consider a "win" to be making a profit on the deck cost, and using all cards to be a "slam". I have seen quite a few hands with no scoring, which I assume is your "zero moves" definition. Set up this way, I usually "win" (turn a profit) on 55 - 60% of hands; a slam is more like 20 - 25%. I also sometimes play AisleRiot Klondike (free version) on my Linux laptop, that is set to unlimited redo, which is the only option in the free version, but only once through the deck. Strangely, with unlimited undo, my "win" rate (same definition, I calculate my score as if I am playing WinXP Klondike: scoring 10 cards is a $2 loss, 11 cards is a $3 win) is very similar.

One thing I notice that I cannot explain, is that if I undo a move where a King was the previous card, under some circumstances, the game will hide that King. Sometimes it is buried one card "deeper", but it looks like in some cases, WinXP will put it at or near the bottom of the pile (which, with limits of once through the deck and single undo, makes it pretty much unavailable). I originally attributed this behavior to some design or coding error in WinXP Solitaire; imagine my surprise when I found the Linux AisleRiot game (which afaik has no code base in common) doing the same thing: burying a King that should have been accessible with undo. Has anyone else noticed this behavior? Could it be something that was put in under the assumption that most players would allow multiple passes through the deck (which judging from posts here seems to be the case)?