The coil on my device gets hot. I can distinctly feel warm air through my filter (not hot, but warm). After taking 4 puffs or so, if I flip the filter around, the other end is quite warm and is really nice to puff on.
I posted an issue with my device when I took it to work. I had it in a case with filters and the charger and I started puffing at my desk. It wasn't getting hot and I was kinda sad, thought it had broken or overheated. I took a stick of pencil led and gently prodded the coil and it worked. I haven't had a problem since. Before I had done this I contacted CS and Ken sent me an email back ~20 minutes later and told me I could send it back for a replacement, he apologized for any inconvenience. I felt bad because I wasted his efforts as my REAL worked 5 minutes later...
My point is, Pauly, maybe your device isn't heating properly. I will note this: if you puff on the device WITHOUT a filter it doesn't seem as hot. However, with the filter if you seal the airflow with your tongue it can be quite hot. I have almost burnt myself by doing this.