In an interesting blog, about how VB2008 Outperforms VB2005, by Members of the VB team in Microsoft, I found this offer:
"All times are found by performing operations on representative, large projects in XP. Don't you wish we were using your project to optimize our times? Send it in so that we can optimize for you! (firstname.lastname@example.org) We are always interested to get more customer projects for our testing.
Is there another scenario you're interested that you don't see above, where you continue to experience performance lags in your regular usage of the product? Please send in repro steps so we can take a look! (email@example.com)"
Looks like an interesting and valuable thing to do!