firefox add-on/extension to save previous session windows/tabs ?

hi folks, does anyone know a good add-on / extension for ff which 'saves' your open windows/tabs. i tell u why. when i use ccleaner to empty the cache/clear cookies etc. and then restart ff, all my open previous windows are gone. and yes, i have enabled in tools in ff: save last open windows/tabs etc. but no matter what i do it will forget my saved session after using ccleaner.

for example, the brilliant opera never has this issue as u can save multiple different sessions. so, does anyone know of anything similar for ff? thanks all as always.

manhunter .

okay, thanks booh. does xmarks really save sessions as i want or just synch across machines? thanks though for your help. anyone else know of a free and tested solution? this really annoys me.

given u rep too boo, thanks .

okay thanks boo, have repped u, might not be what i want though. i am not so much interested in syncing bookmarks as just having ff save my last open windows/tab session. it always seems to fail to do so after using ccleaner. this is never an issue with the brilliant opera which has in built saved session feature. anyone else ?

thanks duzz, have rep u too; and will give that a try asap. thanks boo too.

duzz, after the session/pages are saved -- do they open successfully in a normal ff browser window? thanks