I've never seen that happen. You can actually move your threads if you have a blog setup but I see you don't so that can't be the case.
It can take a bit for changes to appear but I've never seen anything take 10 minutes and even then I've never seen any kind of delay except if you post something on one of Startdocks sites and then you go to another to view it which I dobut is the case here.
I mean strange things do occassionally happen but what you mention is nothing I've ever seen or heard of before.