(2) On the pop-up screen, check the box for "cache". (Don't check the other boxes, unless you want to delete other > (3) Then click the "Clear Now" button. It may take a minute or 2 for the operation to complete (depending upon how large your browser cache is).
See also this Firefox help item: http://support.mozilla.com/en-US/kb/Clear%20Recent%20History
Answers & Comments
Here's how to clear the browser cache in Firefox:
(1) Go to: Tools > Clear Recent History
(2) On the pop-up screen, check the box for "cache". (Don't check the other boxes, unless you want to delete other >
(3) Then click the "Clear Now" button. It may take a minute or 2 for the operation to complete (depending upon how large your browser cache is).
See also this Firefox help item:
http://support.mozilla.com/en-US/kb/Clear%20Recent%20History
I hope that's helpful.