Comment 12 for bug 138343

Similar problems here on an AMD 1.8GHz w/ 1GB of RAM. It is definitely only pronounced on scanned pdf files as opposed to searchable, copy-able text (or maybe anything larger than 1MB). Scrolling down, the RAM usage jumps by 50-100MB for each page I go through, and doesn't come back down. I've attached a shot of my system monitor - you can clearly see where CPU usage and RAM usage go through the roof (I opened and closed it twice). And this is only a 20-page, 2MB pdf... But based on how much ram is being used - it would totally crash a system with <1GB of RAM.

For the "regular" searchable pdf (151KB), memory only goes up by about 30MB total (still a bit much, in my humble opinion).