Okay,thanks for that screenshot, found it. However the issue is the profile size off course.
I installed the vacuum and sett it to autoclean, and i cleaned as much as...410 mb Firefox history

However it wont reach this session underfolder called "delete"? who happen to be larger than the session mainfolder
I don't know about you, but i use Session Manager, but i have no accurate control of it since i don't understand
why session manager in the first place wanna delete any sessions! and then dump it there...where i have ordered it to stay for 27 days before deleting.
Maybe cause I don't wanna delete this sessions since i can never verify who they are or who they where in the past! before it got dumped here?.
Is it a graveyard for crashed sessions?, cause i wont notice!, If i crash i try to reopen the crashed session and then manually put it back into my autosave session-slot and overwrite it