With Chrome and VS2008 with a project open I at least get the Solution Explorer refreshes you described. I don't have time to investigate further right now but my first reaction was that it was a bit scary that a webpage would be able to influence a separate application like that... But a more likely scenario is that VS has hooked up a debugger to the thread and it triggers this behavior.
I don't have any experience with .NET on the web, so I can't say for sure. But I am for sure going to bookmark this and have a look at it later.
Thanks! :)