In the 03 October 2009 issue of the New Scientist, there is a review of a book called Comets and the Origin of Life by Wickramasinghe et al. The reviewer, someone named Marcus Chown, who is apparently judged to be qualified to write for the New Scientist, makes this claim:
...the case for planetary panspermia - the idea that micro-organisms transfer between planets - is now widely accepted...This is a very bizarre remark. I would like to know which serious scientist has claimed that there are live microorganisms in transit between planets.
Putting such an ludicrous statement in print doesn't do anything good to the credibility of the New Scientist.