Hi, Sorry you've been having problems. Pruners, we'll let the ad agency know you've been seeing stalling on ads, but unfortunately they won't be open till tomorrow as it's a bank holiday in the UK today.
MyTwopenceworth, what you are seeing normally indicates a problem with your local cache of pages. If you are using Internet Explorer, deleting your "temporary internet files" (under tools, options on the menu) might help. If you are on a different browser, look for an option called "Empty Cache" or "Clear private data".
Hope this helps.