Well according to the Book "Darwin's Black Box" there are problems with evolution. The problem he finds is some systems if one part of the system doesn't work that whole system is disfunctional and therefore it could not have developed "in stages" the way evolution believes. Here is a review of this book "DARWIN"S BLACK BOX"
Ten years ago, Darwinists could credibly boast that no "serious" scientist took issue with Darwin's theory of evolution. Then came biochemist Michael Behe's Darwin's Black Box -- and everything changed. Drawing on cutting-edge discoveries in biochemistry, Dr. Behe revealed that life at the molecular level exhibits unmistakeable evidence of design, beyond Darwinian randomness. Using the examples of vision, bloodclotting, cellular transport, and more, he showed how the biochemical world comprises an arsenal of chemical machines with so many finely calibrated, interdependent parts as to be "irreducibly complex" -- meaning that they cannot have evolved by stages, because any precursor to an irreducibly complex system that is missing a part would be completely nonfunctional
Overnight, it seemed, the Intelligent Design movement was born, and Dr. Behe became its one of its most respected and articulate spokesmen. Now, Darwin's Black Box has been reissued in a Tenth-Anniversary Edition with an all-new afterword in which Behe explains that the complexity discovered by microbiologists has dramatically increased since the book was first published -- and that the evolutionists have had no success in explaining it.