I have an old 2009 GateWay laptop that used to run Windows Vista. When Vista files became corrupted and the computer refused to boot, I made an Ubuntu 13.10 disc and installed it. It has been running great since!
The laptop has only 2GB of total RAM capacity. Normally 300MB or so is always used.
I use my laptop a lot to upload large HD videos to YouTube, and I keep system monitor open to monitor temperatures and things so I don't overwork the system.
I have, however, noticed that when I upload or download files, my used RAM goes from 300 or so MB to over 1.5GB, and after the file transfer is complete, the RAM empties out.
Is this normal?