Well it took longer than I thought it would. But I've never been on a jury, so what do I know?
		
		
	 
I served on a capital murder jury.  The actual case took about 3 weeks and we were deliberating for about 4 days.  Literally within an hour everybody except for 1 person had a guilty verdict.  It took 3 days of going over all the evidence to finally get the holdout to change their mind.  What really slows things down is if someone has to go to the bathroom you have to stop deliberating and wait for the person to return.  Plus, there is a lot of evidence to go over.  I can't imagine having to review months of evidence.
Then we had another mini-trial for the capital murder portion (death or life sentence) and another deliberation.  That only took a couple hours because the holdout refused to sentence to death.  During the capital murder portion, evidence was presented that the defendant was already doing a life sentence for murder (and would now be doing a double life) sentence.