How can I copy files to a pen drive? (was:2 doubts)

[jordboal]

How can I copy files in a pen drive? I explain my problem. I tried to do it and the computer started tot copy several files, but from one on, it said that it was not enough space in the pen drive (absolutely false, because it was only occupied about a 1%) and that a permission was denied.
Where is the folder for temporary archives or files of Internet?

[ilja]

I changed the thread title to a better one

Second question:
http://linux.derkeiler.com/Mailing-L...5-01/2159.html
in Firefox or Mozilla enter

about:cache

where you normally enter the URL.