You're on the right website for learning about short sales from the trenches..
here is one thread
here's a link to article with Wall Street Journal article that is very informative
titled "Why lenders are leery of Short Sales"
As far as speeding up the process; you have to make sure that the seller and their agent already have pre-approval from the bank for the short sale. However thinking you could ever close a short sale in 30 days in unrealistic. The quickest I have ever heard a short sale close is about 7 weeks.
Trying to buy a short sale with a 30-day lock is simply too risky for the buyer.