Samsung CLP 300 squeaking.

I have a new Samsung CLP 300, about 3 weeks old. It has started to squeak
whenever I print, I suspect rollers somewhere making a noise. I queried
this with Samsung support and they told me to make sure there was no plastic
or paper stuck behind the imaging unit, then wipe the imaging unit's drum
with a damp cloth to get rid of mark and dust.

I find it hard to understand how dust can build up so quickly and there is
nothing stuck in the system. I did a google search and found someone else
had had the same problem. I am tempted to use some WD40 on the rollers, but
before I do, I thought I'd ask the question here as there are lot of wise
heads that might be able to help.

Tel