Hi hi when i was surfing suddenly something started downloading.
I tried to open it in the Downloadmanager, but that didn't work.
Then i closed it and tried to find it in my system.That didn't work either.

I scant my computer later on with an on-line scan, Rkhunter and Clam-scan.
They found not ting wrong.

But i wand to know if there is something downloaded, where i can find it and how to remove it.
Is there a code to Serge for hidden pictures or something like that?

It may have been something benign, like an automated update. Alternatively, it could mean that someone managed to get onto your system and start a download.

In the latter case, they will probably have installed a root kit; search google for the chrootkit script, and run it. But if rkhunter doesn't find it, then don't be surprised if there isn't one there.

The usual stuff: check your firewall is working, turn off (or uninstall) any daemons you're not using, and install any available security patches.

How do you know that something was downloading? If you can find out which piece of software was doing the actual downloading, then it might have left a download log somewhere.

If it happens again, running will tell you where the other end of the connection is.