On the Islamic Courts thing:
As it happens I am a lawyer myself. I think in the US they would call me a trial lawyer.
Islamic Courts are not an integrated part of our legal system. For their decisions to be enforceable the participants have to have agreed to use the islamic court - that court's decision then becomes a contractual matter which is enforceable as an arbitration agreement, and like any other arbitration contract.
So for example, I could set up "Steve's Loony Tunes Court" and as long as I was careful to engage the Arbitration Act 1996, and the parties agreed to be bound by my court's decision, they could then go to a regular court to enforce what my court had decided.
On the Election/Cameron thing:
I don't think Cameron has such a strong position on Europe and immigration as you think, it is stronger than the other main two but still all a bit wishy-washy. There is another party called the UK Independance Party whose manifesto is totaly to get out of europe and stop immigration. They are slowly gaining support and they actually beat Labour (Brown's party) in the last European elections here.
On the Muslim thing generally:
I'm not aware of any real "Muslim problem" in the UK, but then I do live in a part of the country where there are few immigrants of any kind. Mostly round here we have Polish immigrants who work on the farms, and apart from driving tractors too fast on narrow roads they seem to be OK.
I know there have been some problems with a minority of religious fanatical Muslims cooking up terrorist business, but I don't see the mainstream Muslim population buying into that.
I think that main problem we have is that we are a tiny little over-crowded island getting more crowded all the time, and that doesn't work very well with a rather socialist welfare system and too many over-manned state organisations soaking up all our tax payments.
Shall I vote?
I think not - I really don't want to encourage them.