How to figure out why my local host site takes so long to load?

Question

I noticed today and yesterday that running my site on local host is very slow. I highly doubt this is a code issue as when I put it up on my live site it went fast.

For instance

A page on local host debug mode(F5) takes 44 seconds

The same page on my live site takes 2 seconds

The same page on local host but not in debug mode(ctrl + F5) takes 4 seconds

So I am not sure what is up with my debugger but it slows the site to a crawl.

I have visual studios 2010 Ultimate edition.

I thought it was because of some plugin like (resharper, productivity tools and etc). So I uninstalled every single plugin I had.

I tried making a new asp.net mvc 3 project and it loads up fast in debug mode. I also took the exact same code and threw it on another computer that runs VS 2010 Ultimate and it loads up fast.

So I am not sure what to do next to test.

Answer 1

What Browser are you debugging with?

I had similar issues running my site in FireFox 3+ (Win7).

This was resolved by going into about:config if FireFox and setting network.dns.disableIPv6 to true.