Any one out there have any issues with durability on their cross check? I had the wheel slip forwards on my bike and the rear spacing went from 132.5 to 145. Anyone else had to deal with something like this on a Surly or other bike?
That's what I do. Totally torque the shit out of my rear skewer. It's become a deal-breaker with that bike (since I've been racing consistently) and I'm going to be replacing mine with a bike with vertical dropouts.
It's a known issue with all road like frames with those old-school horizontal dropouts. That's why most people don't use them anymore. But Surly does, so you can go single speed if you want (which usually uses a solid axle and nut rather than quick release). Shimano skewers seem to work the best for holding things in place on those dropouts. You could also try to texture the surface to get a little more grip.
Aren't there some wing-nut contraptions available that can help hold the axle in place? Or are those only for track end type dropouts?
You're in the same boat as people who use QR for their singlespeed or fixed gear bikes. It's no big deal, and there is no need for a chaintug. Most of us have gotten a bit lazy with vertical dropouts. http://www.sheldonbrown.com/fixed-conversion.html#qr
"If you are going to use a quick release with a fixed gear, you should make sure to use a good quality enclosed-cam skewer."