Yes there can be problems caused by PTFE but in general use it should be fine. I base my thoughts on this by a posting on another site I frequent which was made by someone who works at the plant that makes the stuff in the UK
http://h2g2.com/F2124165?thread=8136901#p107654532
How do I make a non-stick pan, non-stick again?
Re: How do I make a non-stick pan, non-stick again?
The fumes they give off, when hot enough, are why you shouldn't keep birds in the kitchen - those invisible fumes can kill them.