How to Clear the Cache in Mozilla Firefox

For all versions of Mozilla Firefox below version 1.5:

1. Click [Tools] » [Options...].
2. Select the Privacy tab.
3. Click on [Clear All].
4. Click [OK] and [OK].

For Mozilla Firefox version 1.5 and up (currently, to version 2.0.0.11):

1. Click [Tools] » [Clear Private Data...].
2. Check the Cache check box or, alternately, check all check boxes.
3. Click [Clear Private Data Now].