P*rn shortcuts on desktop is most of the time a sign of spyware or other malware.
So it doesn't necessarily
mean one of the boys visiting p*rn sites or so (f.e. spyware in cr*cks, active-x on cr*cksites, spyware in harmless looking software etc... can also result in p*rn shortcuts on desktop, in the "favorites" folder, .. )
I know this is not really an answer to your question, but perhaps some kind of spyware/malware is the cause of this shortcuts, in that case you might want to post a HJT logfile:
First read this topic and follow all instructionsinstructions
Then, post the logfile hereHJT subforum
and mention the problem(s) you experience, please