Long delay opening any thread member X posts in
 

We have a member that whenever she posts in a thread it takes 60 seconds for it to open after she posts.
It's only threads she posts in and if I delete her posts in those threads, it opens fine (less than 1 second)
I checked her posts and there is nothing unusual at all.
I checked her profile and deleted her avatar, sig and any other displayed information and it still happens.
What can possibly be happening here?