Why is performance slow when 2010 Cassini serves static files?

Question

When starting a site in debug mode in 2010, I get incredible slow performance when cassini serves static files. According to Firebug, each request takes about 1 second to resolve 20 images per 2 KB.

I did not change any settings, I just made it straight up and then converted several projects. Restart your computer, restart IIS without solving anything.

I had another problem that I was asking about stackoverflow.com: Exception when ASP.NET ASP.NET development server is serving static files

Are my problems related?

Any ideas on what might be wrong, or should I try reinstalling it?

Update: this does not apply to any browser, they are all as slow as loading my resources.

Answer 1

Check out the accepted answer to this question, which is very important if you use Firefox as a browser:

ASP.NET MVC on Cassini: how can I get “content”? to return 304s instead of 200s?