unable to write paragraphs

I am unable to write paragraphs in my posts. as when I write a paragraph and then press no paragraph comes up when I post it. it becomes a huge wall of text. I'll demonstrate this by the following: paragraph one paragraph two 1dsadasd In the compose window I have several paragraphs but when I preview it all I can see is one line of text. Any advice as to why this is happening would be greatly appreciated. FYI: I am on windows 64xp (I know) Firefox 3, I have noscripts addon but it still occurs even when disabled. I am writing this directly and not cutting and pasting from word. Thanks for the help.