Real quick, while we're on this topic. The other day we had to go out of town for a couple of hours. I had a Panda on HAM in PC for Zoltars, and nothing else in PC. I blanked and forgot to turn of PC, in addition to my computer itself when we left.
We get on the road, and I'm board because I usually drive, and can't for the foreseeable future. I logged onto Mturk with my phone, and saw a queue full of Z's. I started working on them, and over the few hours we were gone, I completed about 80 Z's on my phone, while PC was catching them on my laptop from home.
Think this would be an issue? TL/DR- accidentally left my home computer with PC running with Zoltars on HAM, and using my phone while away from home I worked on the ~80 HITs that it caught.