Purely by chance, I fired up a free copy of SSDLife on two consecutive days where I haven’t really used my workstation for anything other than email and browsing. Observing the Issue: Heavy SSD Writes from Firefox This issue is being discussed in a STH forum thread where you can follow the discussion. This can have an unintended effect for those SSDs as session store data can write data constantly to NAND. Today’s modern multi-core processor systems and higher quantities of RAM allow users to open multiple Firefox tabs and windows simultaneously. If you are a user of Firefox we have a must-change setting.