Hi,
a friend of mine is running a Joomla based website http://www.DeutscheInMelbourne.net .
The first page renders fine on Windows and Apple devices
but has a full page of spam gibberish <a href>'s to the most wanted items if I believe in spam) before the header menu starts (so I have to scroll down to see any useful content)
I tried on two Ubuntu machines running Ubuntu 12.04, and tried Chrome and Firefox, always with the rubbish in it.
Stranger, it does not even appear in the page source if I look at it using Windows or Apple machines.
I did not look at the server yet (and my friend isn't an IT expert) but I find it that weired that I don't have a slightest idea what the cause might be.
Peter The site has been hacked. Your friend may have inadvertently left a file as read write or the ISP is hacked, quite a number are these days but are in denial. Is he using a shared VPS? Some code may have been placed into a core file somewhere, probably in a .inc file, or maybe in a free text field and inserted into the database. I hope he had backup from say a month ago. The code may have been placed any time while developing so even a month may not be enough. Google "hacking Drupal" or " hacking Joomla", etc, there are quite good tuts and videos on how to hack CMS systems and better still how to reduce the probability. Further, If he (is developing on a windows home pc and) has no intrusion protection, high quality fire walls, etc, he could find that his personal machine is also hacked and that he is inadvertently placing the code while developing. Hope this helps Roger