Thanks for the report!
4iso.com is my own domain and it's he one I use to run the ad server from. Over the past few days, ever since we upgraded, some users have been experiencing an SQL error which caused pages not to load properly. What you would see in a fact, is a page stuck in the middle, and that middle would include drawing ads from 4iso.com.
The delay wasn't caused by 4iso.com (which has been in operation for months now, without a problem), but because of the SQL error which made the page get stuck while working with 4iso.com, if that makes sense. The SQL error has been fixed last night, and hopefully you won't be seeing any more of these problems. If you do still experience problems with pages not loading please do let us know! These reports help us keep the system in check!