Clearing the browsers cache can solve a bunch of display or
login-problems. Browsers store the content of a website in their cache,
to avoid loading images or other content again the next time you visit
this site. This is speeding up your web browsing, but can sometimes
lead to "obsolete" pages (when the browser still prefers accessing
content from the cache instead of loading updated content). Clearing
the cache would force a browser to download the content again to
display an up-to-date page.

Below are some instructions on how
to clear the cache in Firefox and Internet Explorer. If you are using
another browser, search in the help files or browse through the options
or settings. If you have some experience with a yet unlisted browser,
you are invited to write a short tutorial for it so we could update
this thread.

Firefox

Two methods
are available here, the first one being the most simple and the fastest
one to clear your entire cache. Just hit "Ctrl + Shift + Del" on your
keyboard. A window will appear that allows you to clear private browser
data. One of the options you can select here is "Cache", so be sure you
have marked this box before confirming the deletion. This option is
also available in the "Tools" tab in your main menu (clear private
data). If you have a site opened while doing this, don't forget to
refresh it.



The
next option is very easy as well, just refresh the page with "Ctrl +
F5". This method, however, does not clear the entire cache, but only
for the current active page.

Internet Explorer

In the main menu, select "Tools" and then "Internet Options".


Stay
on the General-tab and click the button "Delete" in the section
"Browsing History" - as seen in the screenshot above. You will now see
a list with options to delete private and temporary data. Click the
button on the very top - Temporary Internet Files - and confirm the
deletion afterwards.