You can just link to this thread <div class="gmail_quote"><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> <<a href="https://lists.ubuntu.com/archives/bazaar/2010q2/069122.html" target="_blank">https://lists.ubuntu.com/archives/bazaar/2010q2/069122.html</a>> for the details, but it's nice if you can provide a summary. It seems to me there are two bugs here: 1- first stat after a commit is unusually slow - I can imagine what's happening there, specifically that we don't store the file hashes and stat data during the commit 2- explorer updates are much slower than that - I don't really know why that would be but perhaps profiling explorer will make it clear -- Martin </blockquote></div> Thanks, Martin. I will do that once I collect my thoughts. You've summarized it nicely. I realize that not not everyone deals with projects this large, although to be honest I think more of my projects will be at least this large in the future. Would it be useful if we all had access to the same project for testing? I can't share my project (proprietary) but I could try to find a large FOSS project like MySQL or something else to test. I also wonder how much of my problem is related to the fact that I have a lot of 'binary' data which does not compress well. ~M