Hi,There are times when having a ground becomes a hazard. Probing around in SMPSs with a scope can cause some very unexpected results, for example. One hopes the protection circuitry in the scope will help prevent death-like results for cases where the ground becomes a path for more than you bargained for. It's not always a choice between the earth connection and the person. In general though, and overwhelmingly, proper grounding of test equipment is a better thing to do out of ignorance than removing a ground.
Yeah agreed, and we cant do this with any of the PC scope that i know of so i guess that's a time when it's definitely out.