I can paste text and links now, but it behaves in a very strange manner.
Specifically, I pasted a link and that worked fine.
Then I posted a quote from the link and it went ahead of the link instead of after the link. When I clicked on the View source icon to the right, it didn't show the text I inserted. I inserted the text again in the correct place and this time it went to the right place.
Then when I clicked the View source icon to go back to the default view and it showed all the previous text that I had pasted earlier that didn't show up in the source view. I tried removing this text but that failed.
So I figured that I would go ahead and post what I had and then edit it. Miraculously, the text pasted earlier that was in front of the url was no longer there.
So in the end, it worked okay, but getting there was pretty odd.