I haven't had (or noticed, at least) the Firefox bug, even though I'm using the latest version. But someone posted about a similar problem in ljgenie awhile back. Not knowing about the bug, I suggested she check to see if her menu key (http://www.computerhope.com/jargon/w/winkey.htm) was stuck. Playing around with that key seemed to solve her problem. I'm not sure if it was a matter of the menu key toggling some setting or what.

Also: guppies and the like are cool because they are livebearers. They are also uncool because they are livebearers and will make lots of incestuous little guppies unless you separate the males and the females.