I have Ubuntu Linux 8.04 LTS with Firefox 3.6.3. Unfortunately it is super easy to accidentally click Add To Dictionary on a word you do not want added into one's personal dictionary used in Firefox.
How do I remove the word 'intsead' out of it? I tried some tutorials on the web that said to find ~/.mozilla/*.default/persdict.dat, but I could not see one. As well, others have complained that this file no longer exists in Firefox 3.