VS 2008 SP1 Debugger stepping and breakpoint issues

For the last few weeks we have had reports of stepping issues caused by people installing VS 2008 SP1.  You can see our acknowledgement of this issue here:


The symptoms are that while managed debugging some step commands do not complete as expected, and some breakpoints may be missed if running on hyperthreaded, multi-core or multi-proc hardware. We finally got to the root cause, and I’m glad to announce that we have now made a fix available for this issue.  You can grab that here: