Clear Browsing Data
Just discovered why the RC computers where sooo slow for some students when using WeLCom.
Solution (for Chrome) - Clear Browsing Data (from the beginning of time)
How: Shortcut: ctrl+shift+del and change to "from beginning of time"
Long way: Settings > Advanced Settings > Clear Browsing Data > From beginning of time
Note: It is only the Cookies that you need to delete.