Another odd quirk I have been experiencing...but a little background on how I read the forum first.
My bookmark to this fora takes me directly to the "Recent Unread Topics" page. I then open up a different tab for each new thread, so I often have many tabs open. In the process of reading/posting in the threads, I'll open/switch to other tabs, for google searching, PhotoBucket upload, etc., then I'll return to the initial thread, post what I want, and go on to the next thread.
Well, since last night, ~7pm EST, I have had problems posting to threads. I will type what I want to post, hit the post button, and nothing. It reacts in the same way as it does if you'd make a post, then hit "Back" in your browser, then try to hit "Post" again (at least it reacts the same way for me). If I refresh the page, I'm good to go. So far today, for the threads I've posted in, I've had to do the refresh method for all but one.
Ok, so I don't know what's causing this issue, whether it's that sometimes it can take several minutes for me to get to a thread I've opened or whether it's because I moved away from the tab and back to it. I perused through the "Posting" settings in the admin console as well as a quick glance at my Group's permissions but didn't see anything that looked like a likely culprit.