Just read today:
http://news.com.com/5208-1039-0.html?forumID=1&threadID=4903&messageID=29386&start=-1
Specific absorption rate (SAR) is not the problem

re: Story: Finnish study: Handset radiation within limits

"SAR only measured what impact various radio frequency (RF) waves at varying peak envelope power (PEP) have on heating body tissue. High power RF waves are considered dangerous to the eyes because the resulting heating can contribute cataracts. So the problem with this study is that it measures only heating and says nothing of the possible cell damage than be caused by transmitting from an antenna 2 centimeters from your head (possibly causing cancer).
Such rare cases where this RF creates cell mutations (specifically cancer) cannot be easily tested under lab conditions. Instead we are pretty much forced to speculate and simply observe statistics for the current cell using population and try to draw conclusions from that data. The only problem with such observations is that they are not "proof" until the results can be consistently reproduced in a lab environment. "