Actually, it may have something to do with my adblocker.
 The first post was done through an adblocker, whereas this one was not. Both took approximately 1 and a half seconds to post from the quick reply box. However, it takes significantly longer to load the page when there's ads... about 4 seconds to load it without ads, but when ads are enabled, everything freezes up until the ads are loaded, and that takes usually about 20 seconds. I'm on a 1.5 mbps connection.
I usually have most of my trouble from 0400 to 0800 uct (12:00 am to 4:00 am edt).
It hasn't happened yet today.
But now I have a new problem.
The scroll down buttons at the end of the browser scroll bar won't go into auto-repeat when you hold down the mouse button while the top banner ad bar is moving. I have to grab the scroll handle to scroll down quickly.
I just got a delayed post. It took two minutes to post this message in the thread "Recent Changes":
It seems to be working now. I was getting a different editor I hadn't seen before at times. It had dropdown menus for text color, smileys, and attachments. And the editor selector was missing
And while I was trying to post the above portion of this post you are reading now, I needed to go back to the menu to find out the name of the thread, so I tried to use the clipboard to hold the text I had already written (I knew it would disappear when I went back). But....
The no-scroll error appeared when I tried to drag to select my entire text in the quick reply window. I had to go advanced to put all of it in the clipboard.
That's very rarely the case. The bottleneck is almost always the network and not the servers when dealing with ad servers. Because they know how important it is to be quick loading, they won't let their servers become overloaded, so the bottleneck is usually something that is not as much in their direct control or something easily fixable like throwing another computer into the cluster. Also, ad servers often use distributed bandwidth services like Akamai. (I believe DoubleClick uses Akamai.)