For weeks a bold letter scroll (from right to left) in the space below the address bar of Windows Explorer (NOT Internet explorer) has inceessantly appeared on the first instance but not any additional instance. In other words, if I open C: D: E: F: G: or even A: first , it will scroll there. So, if I decide to drag a file from C: to F:, the scolling appears only in C: It says " Finalizing Installation". I don't know what installation it's refering to. Maybe a virus?