By Amey Stone
The market has been waffling all year due to familiar worried -- spiking oil prices, rising interest rates, and less-than-stellar corporate earnings growth. Finally, the past few weeks have brought encouraging news on all those fronts. Oil prices have fallen to $48 a barrel from early April's spike to $58. The 10-year Treasury yield slipped to 4.12%, the lowest level since February, and corporate earnings for the first quarter came in stronger than expected -- 16% higher than a year ago, according to BusinessWeek's corporate scoreboard.
Yet, just when it seems stocks might be poised to rally, a new crop