Verified with Mozilla/5.0 (X11; Linux i686; rv:2.0b12pre) Gecko/20110204 Firefox/4.0b12pre -- You received this bug notification because you are a member of Mozilla Bugs, which is subscribed to firefox in ubuntu. https://bugs.launchpad.net/bugs/677551 Title: pressing Enter in a large textarea is very CPU intensive with Firefox 4.0