The only other game I tried was World of Goo. It also ran just fine and with no problems.
I never used the install as my main rig, I just ran it when I had the spare time. I should have done more but just couldn't find the time. The holiday season is a terrible time to be trying to beta test anything..lol. I also used the Linux install for basic web browsing, email, etc with the Steam app in the background as a stability test. I would leave the machine running for a few hours and then come back and try loading SS3. It never froze up or crashed. I can't say it was a rigorous test, and there was nothing exotic about my hardware configuration...so I guess the stability of it shouldn't be that surprising.