The live results or snapshot taken while the application is running includes a 
time for the last method entered in each thread.

This time is larger than zero, although the method has not exited yet. The time 
is computed by subtracting the time of taking the snapshot and the time the 
method was entered.

Due to inaccuracy in the timers and the fact that there is somem more agent 
code executed before the timestamp is taken, the computed time can actually be 
larger than the actual time the method took (and thus a time listed for the 
method in subsequent results), making a bad impression about the results 
accuracy.