Clearing your browser cache may improve the performance of your editor. These instruction are for Firefox, Safari, Chrome & IE
Google Chrome: step 1
Before you start: Logout.
In Chrome, select Clear Browsing Data
Google Chrome: step 2
Select Empty the cache (1) and select Everything (2) from the menu. Click Clear browsing data (3). It may take several minutes for the process to complete.
Safari: Step 1
Select Empty Cache
Safari: Step 2
Click the Empty button
Firefox: Step 1
Select Preferences from the Firefox menu
Firefox: Step 2
1: Click the Advanced button
2: Click the Network button
3: Click the Clear Now button
Internet Explorer 8 and 9
Note: The Site editor is optimised for Firefox and Chrome.
Click on the "Safety" menu at the top of the page.
Check the box next to: "Temporary Internet Files and History"
Click the "Delete" button.