As soon as FIOS is available in my area I will build and run my own server for my blog. I have a 6 meg connection already but that is likely to bog down at times.
This was a couple of weeks ago.
I use GoDaddy right now and I have very mixed opinions about them.
I havent seen the lag problems here myself but I am not here that much. We had similar problems when first starting NU and it was extremely frustrating.