I've been having issues with my rear wheel lately. First, a couple weeks after I bought my bike in May, I had a spoke come loose. No big deal, I took it to my LBS where I bought the bike and got it sorted out. A week later, the same exact spoke came loose again. LBS sorted that out as well and it was fine for a while without an issue.

After riding in the local BikeMS charity ride last weekend, I noticed some wobble in the wheel and had to adjust the brakes to keep it from rubbing. Yet again, the LBS sorted it out, but after about 50 miles, it happened again. So, today I took it in and got it trued and went out for a quick 15mi ride. Toward the end of the ride, I could hear some rubbing with each rotation of wheel. I stopped to take a look and sure enough, there's more wobble.

I didn't hit any huge potholes or anything that would be the obvious culprit. There are lips before bridges on the local trails here and there, and the occasional rough patch of road when traffic forces me to the edge, but nothing major (IMO anyway) that would do this kind of damage. I have 700x25 tires, and check my pressure before every ride, using 90psi in the front and 95psi in the back. The wheels are the stock Axis wheels that came on my bike. Has anyone else had this much trouble?