Running the recent Norton toolbar hotfix (3.5.1) with Firefox 3.5.1 on Windows Vista SP2 causes the browser to crash when checking my credit card account activity on www.chase.com. This is a repeatable phenomenon. When I disable the toolbar, all works well in Firefox 3.5.1. And if I revert to Firefox 3.0.11 with the hotfixed toolbar enabled, all works well then too. Since I like the toolbar feature, I have decided to stick with Firefox 3.0 for a while longer. I hope that Norton releases a fixed hotfix for the toolbar soon, so that I can return to using Firefox 3.5.