Jan Gray talks about the update to the CLR Profiler
    We've just updated the CLRProfiler distribution. Once again, we're shipping both the source and the prebuilt binaries, and this time we're delighted to include a terrific ~100 page tutorial and reference manual written by the tool's author, Peter Sollich. I think this new documentation greatly enhances the power and utility of the profiler by demonstrating how to use its features more effectively -- for example, how to diagnose a memory leak.
Definitely a tool you want to get, I know the early version rocked, so this must be even better :)