on my phone i hane no option for rooting to get access to system files but whenever i upload a large (15 megs or so) file it claims a huge portion of my phone system memory to what im guessing is cache the file im uploading. this extra data is not freed by the system at startup and im not sure if the options in clear private data will completely clear it. is there a way to either clear uploaded files or atleast force firefox to use my sd.card storage space for uploads/plugins/ addons or anything else it needs to atore?