When I reply to a message or try to post a new thread the area where I write messages (where I'm typing now) often takes ages to show. It took 20 seconds to show once the rest of the page rendered to write this message, for example, and I have another one on my consumer thread which took between 20 and 40 seconds.

I'm on a corporate network which seems to otherwise be working fine. Is it a frame, or some kind of fancy control that's taking time to load? If so why is the frame or control not cached on the client side?

I also noticed the other day avatar images don't seem to be cached on the client side, in that they load a bit slowly sometimes. I tried to look at the headers but the random filenames discouraged me from looking further.