ORIGINAL: HNIJustin
Most likely it's some sort of javascript error. Try updating your java to the latest version and see if it continues to happen.
Also - is it happening when you use CTRL-V, when you right click and paste, when you go to Edit > Paste, or a combination of them all?
Justin, on mine, it logsme out when I post and click OK! I have to log-in again and retype the post![:'(]