Those babies look very thin and stretched, either move your lights closer or invest in a better CFL. something like this for vegging -
125W ENVIROLITE Grow Lamp / Light - 6400K Veg - New on eBay, also Hydroponics, Plants Seeds Bulbs, Garden Plants, Home Garden (end time 19-Jun-08 23:25:00 BST)

and then you'll need the red spectrum version for flowering.

I wouldn't worry too much about fire hazard as long as your wiring is all good.

good luck