The Wall Street Journal (subscription required) reports that producer prices launched upward at a 1.2% monthly rate in July. The rise in the PPI -- which was 0.7 percentage points faster than the 0.5% rate economists expected -- was the result of rising wholesale prices for energy spreading to "automobiles, prescription drugs and capital equipment."

Since the price of oil has dropped 24% from $147 to $112, should we all be relieved that July's number is a temporary blip? Let's hope so, because if not, rising wholesale prices make it even harder for businesses to make a profit when consumer demand is weak.

These higher wholesale prices mean that businesses have two options to maintain profits: keep prices the same but cut costs in other areas by finding productivity improvements, cutting back on payrolls and salaries and the likes, or raise prices to offset those rising costs.

In the first half of 2008, the S&P 500 fell 12%. June's stock market was the worst since 1930. So are stocks now a screaming buy or are they poised to plunge further? Nobody knows. But my guess is that stocks will move based on how well they perform compared with expectations. And the risk of negative surprises in most industries exceeds the chance of positive ones. So stocks will probably keep falling.

Here's a quick review of six negatives:

• Oil prices. With oil at $142, up 492% since January 2001, consumers are paying about $4.10 a gallon for gas and companies that use oil are getting squeezed while trying to raise prices. An attack on Iran, a big oil supplier, looms on the horizon. This and other geopolitical uncertainties could put further pressure on oil.
• Housing. Three million people are expected to face foreclosure on their homes. And prices have dropped 15%. Since people were using home equity to finance their purchasing, their negative equity is sucking the wind out of the economy.