As long as Grant's eyes are on the thread:
My browser is Opera v11.62, and occasionally, maybe 25-40% of the time, when I click on reply, quick reply, or the quote post reply method, the text box never fully appears. I simply get a grayed out box, which still features the little resize triangle/arrow thingy in the lower right corner (although that is not functional then, either), but am unable to enter any text whatsoever. It's as if the border for the box is loading, but the actual edit box doesn't load.
Not sure if this is just an issue on my end, although I can say I never had this problem until after the recent hacks.