I have attached the entire profile (such as is available on Mac OS X) to the bottom of this message. One warning though: I am only interested in profiling my solver (function SfTwoDsolver.DsfTwoDsolver. superfastLUofBTDSSS'). However the time required to set-up my problem is significant. So the profiler information may not be that helpful. Direct timing shows that on this run my solver required about 43 seconds to run. --shiv--