You don't believe the "free" command? It says: your system (without Buffer/Cache) is consuming more than a gig?
You run some "ps aux"/"ps -eF"/… and can't believe all those tiny pits are "more than a gig"? There's only firefox with >100mb, this is not plausible?
sum=0; for i in $(ps -eo rss); do sum=$[$sum+$i]; done; echo $sum
I didn't believe either. I summed up (mental arithmetic) the bigger ones... ~200mb. free said: 700MB... wow...
But this way I know now: Yes. 700MB is indeed plausible. And without shared libs it would be "more than a gig"