Erm....we are moving into an area that is a bit complex, but there are some hacks/tweaks that can make a Winblows box run the interwebby faster. Not sure they will help in your case, but for starters have a look in the event viewer and see if you're getting any TCP warnings or errors about thresholds being exceeded.
Now if you're manually commenting to BlogEngine targets, that platform blows dead bear so badly that it's going to be slow no matter how much you tweak. But if you're targetting other platforms, we might be able to improve your experience.
If the stuff about event viewer is Greek to you PM me, I owe you a PM any way (sorry - been a long couple of days, today being the frosting on the crap cake as I dealt with: an ill child home from school, an adult "working from home" all day, and one of the computers on the network here is fockered up beyond belief and very unstable, which in total kept me from getting much work done myself - I thought I was gonna freak out, but I survived...sedatives are a wonderful aid sometimes....ah, the quiet now....it's lovely).
Oh and generally I would caution against EVER turning off proxies when running this or any tool that scrapes or otherwise hammers web sites. I know it's a tempting thing to test when you're troubleshooting but it can do so much harm in terms of your IP getting seared into the Borg collective of the various service providers (*cough* guh-oogle *cough*).