lol, you know I am and have. Desktop share, remember? ;) I can clear cache again if you like.
Sadly, I didn't have the Network tab open when it happened, so I have no useful data other than the screencap for you. :( If I can get it to repro, I'll start keeping it open. :P
Here's a fun one. Haven't repro'd it yet, but figured I'd report.
I posted a reply to a thread, hit "Post Quick Reply" exactly once. It reloaded the page to the Advanced Editor, with the error:
I went back to the thread, and sure enough, it'd posted already and errored on trying to...