I performed all the tips and i still get many infected notebooks.
Most of them get infected via Java.
It's Bloodhound.Exploit.292.
But when i connect to the specific notebook the virus has already been installed. I then update all programm like Java, Adobe and ensure that Windows XP has the latest patches (which it has most of the time).
And even if i run Malwarebytes and some other programs sometimes i can't get rid of it.
I hope with Windows 7 everything is getting better....