There's no shortage of tough problems that jump right in the faces of IT administrators, but some of the worst IT problems facing companies are <A HREF="http://www.eweek.com/c/a/IT-Management/10-IT-Problems-You-Might-Not-Know-You-Have/?kc=EWKNLEDP051508A">the ones they don't know they have.</A> In this story, eWEEK Labs identifies 10 cost- and productivity-robbing problems that might be lurking in your infrastructure and offers IT admins guidance on how to overcome them before it's too late.