Since the site upgrade I have noticed one or two weird little bugs:
1) Sometimes when I have posted in a thread (quoting someone else's post), then visit somewhere else in the site, and then return to the thread I posted in earlier, I notice that I am presented with the quoted post again in the quick reply box, which needs to be deleted before I can post again.
2) Sometimes when I try to post in a thread using the quick reply box, after I click 'post quick reply' I get this pop up window....
"OK" posts the message, "Cancel" returns me to the thread with my post unposted.
3) The pop-up window in bug number 2 also displays if I return to a thread I have posted in before where I have quoted someone else's post, (as per bug number 1) and just try to leave the thread without posting.
I'm using Firefox 22.214.171.124, but the same has happened when I use FF 5.