User-Agent: Mozilla/5.0 (X11; U; Linux ppc; en-US; rv:1.8a4) Gecko/20040926 Build Identifier: Mozilla/5.0 (X11; U; Linux ppc; en-US; rv:1.8a4) Gecko/20040926 When I open the Preferences window, the category pane contains nothing. And if I close the Preferences window, I can no longer reopen it. Reproducible: Always Steps to Reproduce: 1. Open the Preferences window (Edit -> Preferences...). Actual Results: The window opens (if done for the first time since Mozilla has started), but the category pane on the left doesn't contain anything. Expected Results: The category pane should contain the various categories, so that one can select them.

*** This bug has been marked as a duplicate of 237279 ***