Assume that you’re using MS Explorer and Windows XP.
It’s a problem with full interenet cache.
At any browser window.
Choose Tools :: Internet Options from your menu.
Then in the Temporary files section choose the Delete Files button.
It will start deleting old files and within about 5-10 seconds you’ll have room to start viewing source again.
(it may keep deleting for a minute or so).
Gl mate.
:xmas: