JMHO but I think the next major trigger is going to be gold itself. The US financial system is getting worse by the day and they will not be able to paper over their problems forever. Their are many more bank failures on the way and people are starting to loose confidence in the US$ itself.
I have been taking advantage of the current low prices in ARU and some of the junior producers to slowly accumulate a little more (dollar cost averaging). It can be gut wrenching but as far as I am concerned the time to buy is when things are on sale.