Firefox 4 save session on close

Firefox 4 on Windows 7
Firefox 4 on Windows 7

(should be 22 March 2011 09.00 PM at GMT-5 US) i got FF4 on my work notebook, HP Probook 5220m, i get it from engadget article, before the actual release date. first impression is awesome, this is the version of FF i love the most, compact UI, larger screen for content, and even better HTML5 and javascript engine.

i get it on all my machines as soon as possible, that count as XP on ThinkPad T61, Ubuntu 10.04 on ThinkPad T61 and Windows 7 on Probook 5220m, another feature that i love is the sync, it’ll sync bookmark on all my firefox browsers on all machines, including preferences and tabs, i hope it include add-ons too later :)

Closing FF4but something different, when closing FF4 by default it won’t ask you to save current session or not, it only gives warning to close multiple tabs, i love that features, and i want it back! so here’s how, type