the thing that i personally believe is that all the stuf goin about infertility using mobile fones and using lab tops are all a part of research......which keeps chaniging day by day....may be the recent data says sperm count decreases in males using mobiles and lab tops but a research might soon come sayin that this is untrue...moreover alcohol,cigarrate somkin also causes infertility so may be the pple in whom the research was done were alcoholics and heavy smokers so chill guys dont bother about infertility...the thing i am tryin to say is until and unless it is proven in 100 p.c cases u need not worry.....