EXHIBIT 10.5 AMENDMENT NUMBER FIVE TO THE GENERAL AGREEMENT AMONG KMC TELECOM INC., KMC TELECOM II, INC., KMC TELECOM III, INC., KMC TELECOM IV, INC., KMC TELECOM OF VIRGINIA, INC., KMC TELECOM LEASING I LLC, KMC TELECOM LEASING II LLC, KMC TELECOM...