Just this week, having a problem with my tabs refreshing. I upgraded to version 5 today and I still have this problem, so it was happening with version 4.01. I click on a bookmark or site, and it opens a new tab, but the content doesn't refresh. What's the purpose of tabs, if they don't work? Help please! Also noticed slowing of performance this week. Running Mac OS X 10.6.7 (10J869), and just upgraded to Firefox 5, and the latest flash update.10.3.181.26 I just noticed if I close one tab, the other tab's content is there (ie. this form when I closed the Flash tab), but I can't just toggle-switch between tabs and see the difference in content.