The problems with cloning, so far as I can discern them are:
1). Playing God instead of worshiping Him. This problem is insurmountable and renders moot the others.
2). Imperfect clones who then suffer from their imperfections.
3). Clones subsequently being afforded fewer rights than all men are endowed by their creator (i.e. God).
I say it's a clear no-go.
Actually, the biggest problem I have with cloning is the amount of embryos that must be destroyed doing research and even during the actual cloning process.
Another problem I have with not so much the cloning itself, the misnomer that cloning is creating new life without God's help. Not quite. You still need an already created egg and sperm, which God created in the first place. Try creating a man from the dust of the ground, now then you would have something.
Cloning advocates still have a lot of issues they fail to address.
A good site: http://www.answersingenesis.org/home/area/QA.asp