Whenever network discovery (for NS 7) is used, some of the Wyse 3125SE terminals in the environment freeze or slow down and do not recover until the clients are restarted.
Firmware version 506.4 [fails]
Firmware version 506.4.20 [works]
Customer upgraded the firmware on older ones to Ver 506.4.20 and now it works fine.
Notification Server 7 SP2
Wyse 3125SE thin clients