While it's true that commodities are running for the well known fundamental reasons and the meltdown of the dollar, we are nowhere near bubble territory yet. The CRB index is extended and we could get a 30% draw down ....... and still be in an uptrend and will have further to go.
As a reminder to all how a bubble feels..... remember the 1999 period for equities when your uncle, your plumber, and your florist were trading stocks??? When it was the talk of the parties, the content of the magazines and wild fortunes were made in months?? That's a bubble!!
Remember real estate in 2004?? when everyone was a part time real estate agent, a mortgage broker, a residential contractor, or a "flipper"??? .... How about the daily ads on Bloomberg "buy the house for no money down" or all the people that are willing to risk their credit on speculative purchases cause everyone was making money in real estate!!
So while I can't tell the future, my uncle has not bought gold bars yet, my plumber does not know what exchange oil is traded on, and my florist has not gone out and bought wheat contracts just yet. When the fever happens, you will all know it..... and a year or so later, yes, it could be a bubble!!
For anyone that believes the commodity bubble will not have the fever associated with the equity and housing bubbles I just described above, for reasons one hears from commentators, "commodities are real assets, harder to trade, people don't have access to futures accounts, some assets are illiquid, currency risk....." I can tell you that I had just started college in 1979 and students, taxi drivers, and doctors were all trading GOLD and people were selling out of their assets and going on debt as they just had to buy gold and silver.
See the chart... this is what a bubble looks like!!
http://www.bullnotbull.com/archive/gold1980.html