A method and system for handling a security exception. A plant based grid reconstruction manager develops solutions for reconstruction sequence steps to be carried out automatically or to be communicated to site personnel for manual implementation. In another aspect, hysteresis is applied to limit cell reselection, wherein the hysteresis is greater in relatively higher quality channel environments and lower in relatively lower channel quality environments. wherein said variant comprise variations in one or more of the following positions: 32, 33, 48-54, 58-62, 94-107, 116, 123-133, 150, 152-156, 158-161, 164, 169, 175-186, 197, 198, 203-216 as compared with the protease in SEQ ID NO:1; andb. Improved client device and network configurations, as well as methods of operating these systems, are also disclosed.