I'm using WordPress 2.0.5. I recently created a post on my site, the last paragraph of which happened to be in Bold. Now, all entries following it on the page are completely in bold. So that's bug report #1.
Bug report #2 is that I can't fix it. I tried adding a line of normal, non-bold text at the end of the post. It appears as non-bold text when in the wysiwig text editor, but it still displays as bold text anyway in the browser. I've looked at the HTML source, and even though there is a closing tag, that isn't what actually is getting rendered when the page is viewed.