How to clear your internet browser's cache.

In order to speed up web browsing, web browsers are designed to download web pages and store them locally on your machine in an area called the "cache". When you visit the same page for a second time, the browser speeds up display time by loading the page locally from its cache instead of downloading everything again. This sometimes results in less than current versions of web pages being displayed. If you believe that you have a less than current version of a page, please follow the following steps to clear the cache in your particular browser.

Although it's not required by all browsers, restarting your browser after clearing the cache is a good idea. If you're using Explorer 4.x or Explorer 5.x it's better to restart the computer as well.

TO RELOAD A PAGE:
Hold the Ctrl key, and press F5.
or
Hold the Ctrl key, and click the Refresh button on the Start bar.


EXPLORER 8
Click “Safety” and select "Delete Browsing History"
Check "Temporary Internet Files" and "History"
Click "Delete".


EXPLORER 7
Click “Tools” and select "Internet Options"
Choose the "General" tab and click "Delete Files" under the Temporary Internet Files section.


OLDER VERSIONS
Click on 'Tools' and then 'Internet Options' and choose the 'General' tab.
Click on "Delete..." under "Browsing history".
In the 'Temporary Internet files' section, click 'Delete Files...'.
You will then get a dialogue box asking if you want to delete just the temporary files, or all offline content. Select all offline content and click 'OK'

This includes Firefox, Netscape Navigator (versions 6.x and 7.x) and SeaMonkey.

TO RELOAD A PAGE:
PC: Hold down the Control and Shift keys, and press R.
Mac: Hold down the Command and Shift keys, and press R.
or:
Hold down the Shift key, and click the Reload button on the navigation toolbar.

TO COMPLETELY CLEAR THE CACHE:
From the 'Edit' or 'Tools' menu, choose 'Preferences' or 'Options'.
Expand the 'Advanced' options and choose 'Cache' or 'Privacy'.
Click the button called 'Clear Cache'.
Click 'OK'.

TO RELOAD THE PAGE:
For version 4 and newer:
Hold down the Shift key and click the Reload toolbar button.

For version 3 and older:
From the 'Safari' menu, choose 'Empty Cache...'
or
Hold down the Option and Command keys and press E.

TO CLEAR THE CACHE:
Go to the Tools menu (the wrench on the upper right of the browser)
Click on Clear browsing data...
Select the types of data you want to clear
On the Clear data from this period: drop-down list, select the data you'd like to delete.

TO COMPLETELY CLEAR THE CACHE:
Go to the Tools menu and click on Options
Go to Privacy and then, under Privacy, click on Cache
Click on Clear Cache Now

TO RELOAD THE PAGE:
Press the F5 key to reload from the web.
or
Hold down the Shift key, and click the Reload button on the navigation toolbar.

TO COMPLETELY CLEAR THE CACHE:
From the 'Tools' menu, choose 'Preferences'.
Expand the 'Advanced' options and choose 'History'.
Click the button called 'Empty now'.
or
From the 'Tools' menu, choose 'Delete private data'. Click 'Details', make sure that 'Delete entire cache' is selected, and then choose any other data you want to remove.

TO RELOAD A PAGE:
Press F5.
or
Click the Reload button on the toolbar.

TO COMPLETELY CLEAR THE CACHE:
1. From the 'Settings' menu, select 'Configure Konqueror'.
2. Scroll down to select the icon labelled 'Cache'
3. Click the button labelled 'Clear Cache'.

http://en.wikipedia.org/wiki/Wikipedia:Bypass_your_cache
http://www.mnot.net/cache_docs/