Hi everyone, There may be some confusion over my problem. It seems in other version of the profiler an "X" appears in the "accel" column that is hyper-linked to info on why the line didn't accelerate. The "X" does appear in my profiler, however, it is NOT hyper-linked so I don't have any info on why the line did not accelerate. Also, when I issue setpref('profiler','showJitLines',1) command, the column name subsequently appears is "unjitted" NOT "accel". How can I get more info on why the line did not accelerate?