Reuters - Thu, May 24, 2012SAN FRANCISCO (Reuters) - NetApp Inc on Wednesday forecast revenue below Wall Street's expectations and its chief executive warned of uncertainty in Europe, sending the data storage equipment maker's shares down 18 percent in after-hours trade. The day before, Dell Inc posted disappointing quarterly results that heightened concerns about cautious IT spending, sending tech stocks sharply lower. "The EMEA (Europe, Middle East, Africa) story is one of uncertainty. We could be seeing a rebound or we could be seeing a strong degradation from there," CEO Tom Georgens said in a telephone interview. ... More »Europe weighs on NetApp's outlook, stock slumps